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.

A308461 Expansion of e.g.f. exp(x + 2 * Sum_{k>=2} x^(2^k)/2^k).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 13
5 61
6 181
7 421
8 15961
9 137593
10 682921
11 2498761
12 77344741
13 927575221
14 6402167773
15 31881065581
16 4104839160241
17 68050288734961
18 609856397747281
19 3857727706737553
20 222655237411428541
21 4351842324095032621
22 47276537013742616581
23 361153046139022585141

List of values

[1, 1, 1, 1, 13, 61, 181, 421, 15961, 137593, 682921, 2498761, 77344741, 927575221, 6402167773, 31881065581, 4104839160241, 68050288734961, 609856397747281, 3857727706737553, 222655237411428541, 4351842324095032621, 47276537013742616581, 361153046139022585141]