cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A248657 E.g.f.: Sum_{n>=0} exp(n^2*(n+1)/2*x) / (1 + exp(n^2*x))^(n+1) = Sum_{n>=0} a(n) * x^(2*n) / (2*n)!.

Table of values

n a(n)
0 1
1 -154
2 22885622
3 -67465813019194
4 1437168237462688869782
5 -134874257420380161852790174234
6 41492847795963159872255018412799196342
7 -34364863511758593932657779153553482763524487674
8 66563566600887661498498837311669792149014849464660729302

List of values

[1, -154, 22885622, -67465813019194, 1437168237462688869782, -134874257420380161852790174234, 41492847795963159872255018412799196342, -34364863511758593932657779153553482763524487674, 66563566600887661498498837311669792149014849464660729302]