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.

A121688 G.f.: Sum_{n>=0} x^n * (1+x)^(2^n).

Table of values

n a(n)
0 1
1 2
2 3
3 6
4 15
5 49
6 210
7 1191
8 8981
9 90405
10 1219297
11 22105506
12 540476679
13 17875316557
14 802011318369
15 48947781204529
16 4073596070782653
17 463360670014324153
18 72183972733773232361
19 15430254274957714069057

List of values

[1, 2, 3, 6, 15, 49, 210, 1191, 8981, 90405, 1219297, 22105506, 540476679, 17875316557, 802011318369, 48947781204529, 4073596070782653, 463360670014324153, 72183972733773232361, 15430254274957714069057]