#include <bits/stdc++.h>
using namespace std;
long long dp[505][505];
long long ans[505];
long long main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  long long n, k;
  cin >> n >> k;
  for (long long i = 1; i <= n; i++) dp[0][i] = 1;
  for (long long i = 1; i <= n; i++) {
    for (long long j = 1; j <= i; j++) {
      for (long long k = 1; k <= min(i, j); k++) {
        dp[i][j] = (dp[i][j] + dp[i - k][j]) % 998244353;
      }
    }
  }
  for (long long i = 1; i <= n; i++) {
    ans[i] = (dp[n][i] - dp[n][i - 1] + 998244353) % 998244353;
  }
  long long cnt = 0;
  for (long long i = 1; i <= n; i++) {
    for (long long j = 1; j <= n; j++) {
      if (i * j >= k) continue;
      cnt = (cnt + ans[i] * ans[j] % 998244353) % 998244353;
    }
  }
  cout << (cnt * 2) % 998244353 << endl;
  cin.get(), cin.get();
  return 0;
}
