7. (6 points) A sequence of numbers arranged according to a rule: $2,5,9,14,20,27, \cdots$, the 1995th number in this sequence is
7. (6 points) A sequence of numbers arranged according to a rule: $2,5,9,14,20,27, \cdots$, the 1995th number in this sequence is 1993005 $\qquad$
【Solution】Solution: The 1995th number in this sequence:
$$
\begin{array}{l}
2+3+4+5+6+\cdots+1996, \\
=(2+1996) \times 1995 \div 2, \\
=1993005 .
\end{array}
$$

Therefore, the answer is: 1993005