import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;
import java.util.List;
 import java.util.*;
 public class realfast implements Runnable 
  {
    private static final int INF = (int) 1e9;
    long in= (long)Math.pow(10,9)+7;
    long fac[]= new long[3000];
    public  void solve() throws IOException 
    {
        long m =  998244353;
        int n  = readInt();
        int k = readInt();
        long sum[]= new long[n+1];
        sum[0]=0;
        for(int i=1;i<=n;i++)
        {
            long dp[]= new long[n+2];
            dp[n+1]=1;
            for(int j=n;j>=1;j--)
            {
                for(int l=1;l<=Math.min(i,n-j+1);l++)
                {
                    dp[j]= (dp[j]%m+ dp[j+l]%m)%m;
                }
            }
            sum[i]= (dp[1])%m;
        }
        long val =0;
        
        //out.println();
        for(int i=1;i<=n;i++)
        {

            int j = k/i;
            if(k%i==0)
                j--;
            j=Math.min(n,j);
            val = (val%m + (((sum[i]%m-sum[i-1]%m+m)%m)*(sum[j]%m))%m)%m;
        }
        val = (val*2)%m;
        out.println(val);

    }
    public int seg(int seg[], int left, int right, int index, int val)
    {
        if(left==right)
        {
            seg[index]=1;
            return 1;
        }
        int mid = left+(right-left)/2;

        if(val<=mid)
        {
            seg(seg,left,mid,2*index+1,val);
        }
        else
        {
            seg(seg,mid+1,right,2*index+2,val);
        }
        seg[index]= seg[2*index+1]+seg[2*index+2];
        return seg[index];
    }
    public int val(int seg[], int left , int right, int l , int r,int index)
    {
            if(left>r||right<l)
            {
               return 0;
            }
            int mid = left+(right-left)/2;
            if(left>=l&&right<=r)
            return seg[index];

            return val(seg,left,mid,l,r,2*index+1)+val(seg,mid+1,right,l,r,2*index+2);
    }
    public int gcd(int a , int b )
    {
      if(a<b)
      {
        int t =a;
        a=b;
        b=t;
      }
      if(a%b==0)
        return b ;
      return gcd(b,a%b);
    }
    public long pow(long n , long p,long m)
    {
         if(p==0)
            return 1;
        long val = pow(n,p/2,m);;
        val= (val*val)%m;
        if(p%2==0)
            return val;
        else
            return (val*n)%m;
    }
    
    
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
    public static void main(String[] args) {
        new Thread(null, new realfast(), "", 128 * (1L << 20)).start();
    }
 
    private static final boolean ONLINE_JUDGE = System.getProperty("ONLINE_JUDGE") != null;
    private BufferedReader reader;
    private StringTokenizer tokenizer;
    private PrintWriter out;
 
    @Override
    public void run() {
        try {
            if (ONLINE_JUDGE || !new File("input.txt").exists()) {
                reader = new BufferedReader(new InputStreamReader(System.in));
                out = new PrintWriter(System.out);
            } else {
                reader = new BufferedReader(new FileReader("input.txt"));
                out = new PrintWriter("output.txt");
            }
            solve();
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            try {
                reader.close();
            } catch (IOException e) {
                // nothing
            }
            out.close();
        }
    }
 
    private String readString() throws IOException {
        while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            tokenizer = new StringTokenizer(reader.readLine());
        }
        return tokenizer.nextToken();
    }
 
    @SuppressWarnings("unused")
    private int readInt() throws IOException {
        return Integer.parseInt(readString());
    }
 
    @SuppressWarnings("unused")
    private long readLong() throws IOException {
        return Long.parseLong(readString());
    }
 
    @SuppressWarnings("unused")
    private double readDouble() throws IOException {
        return Double.parseDouble(readString());
    }
}
class edge implements Comparable<edge>{
    int val ;
    int color;
    
    edge(int u, int v)
    {
       this.val=u;
       this.color=v;
    }
    public int compareTo(edge e)
    {
        return this.val-e.val;
    }
}