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.

A291414 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 2 S + S^3.

Table of values

n a(n)
0 2
1 6
2 15
3 37
4 89
5 212
6 500
7 1173
8 2741
9 6388
10 14860
11 34524
12 80138
13 185904
14 431075
15 999280
16 2315960
17 5366755
18 12435075
19 28810731
20 66748062
21 154635086
22 358234115
23 829886167
24 1922494024
25 4453566092
26 10316878400
27 23899399028
28 55363614076
29 128251081293

List of values

[2, 6, 15, 37, 89, 212, 500, 1173, 2741, 6388, 14860, 34524, 80138, 185904, 431075, 999280, 2315960, 5366755, 12435075, 28810731, 66748062, 154635086, 358234115, 829886167, 1922494024, 4453566092, 10316878400, 23899399028, 55363614076, 128251081293]