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.

A291337 p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - 2 S - 2 S^3.

Table of values

n a(n)
0 1
1 3
2 10
3 34
4 115
5 387
6 1300
7 4366
8 14665
9 49263
10 165490
11 555934
12 1867555
13 6273687
14 21075220
15 70798066
16 237832225
17 798950763
18 2683918570
19 9016098634
20 30287816995
21 101745987387
22 341795711140
23 1148195728966
24 3857138603785
25 12957301471863
26 43527515777650

List of values

[1, 3, 10, 34, 115, 387, 1300, 4366, 14665, 49263, 165490, 555934, 1867555, 6273687, 21075220, 70798066, 237832225, 798950763, 2683918570, 9016098634, 30287816995, 101745987387, 341795711140, 1148195728966, 3857138603785, 12957301471863, 43527515777650]