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.

A291244 p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - 4 S + S^2.

Table of values

n a(n)
0 4
1 15
2 60
3 239
4 952
5 3792
6 15104
7 60161
8 239628
9 954465
10 3801740
11 15142752
12 60315260
13 240242367
14 956911980
15 3811486495
16 15181573232
17 60469889136
18 240858271816
19 959365196977
20 3821257929948
21 15220493940369
22 60624914631700
23 241475755550400
24 961824703141876

List of values

[4, 15, 60, 239, 952, 3792, 15104, 60161, 239628, 954465, 3801740, 15142752, 60315260, 240242367, 956911980, 3811486495, 15181573232, 60469889136, 240858271816, 959365196977, 3821257929948, 15220493940369, 60624914631700, 241475755550400, 961824703141876]