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.

A360727 Expansion of Sum_{k>=0} (k * x * (1 + x^2))^k.

Table of values

n a(n)
0 1
1 1
2 4
3 28
4 264
5 3206
6 47684
7 839249
8 17058688
9 393216567
10 10134918592
11 288815780665
12 9016571143680
13 306027510946208
14 11219450971161024
15 441846991480590475
16 18602901833071633792
17 833832341625621777368
18 39642569136740054367808

List of values

[1, 1, 4, 28, 264, 3206, 47684, 839249, 17058688, 393216567, 10134918592, 288815780665, 9016571143680, 306027510946208, 11219450971161024, 441846991480590475, 18602901833071633792, 833832341625621777368, 39642569136740054367808]