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.

A291382 p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - 2 S - S^2.

Table of values

n a(n)
0 2
1 7
2 22
3 70
4 222
5 705
6 2238
7 7105
8 22556
9 71608
10 227332
11 721705
12 2291178
13 7273743
14 23091762
15 73308814
16 232731578
17 738846865
18 2345597854
19 7446508273
20 23640235416
21 75050038224
22 238259397096
23 756395887969
24 2401310279090
25 7623377054503
26 24201736119310

List of values

[2, 7, 22, 70, 222, 705, 2238, 7105, 22556, 71608, 227332, 721705, 2291178, 7273743, 23091762, 73308814, 232731578, 738846865, 2345597854, 7446508273, 23640235416, 75050038224, 238259397096, 756395887969, 2401310279090, 7623377054503, 24201736119310]