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.

A291230 p-INVERT of (0,1,0,1,0,1,...), where p(S) = (1 - S)(1 - 2 S)(1 - 3 S).

Table of values

n a(n)
0 6
1 25
2 96
3 351
4 1242
5 4304
6 14706
7 49761
8 167232
9 559303
10 1864110
11 6197472
12 20567262
13 68166713
14 225713280
15 746866143
16 2470077378
17 8166190192
18 26990599050
19 89190984033
20 294691499808
21 973574384231
22 3216160413654
23 10623856065984
24 35092075282998
25 115910575744921

List of values

[6, 25, 96, 351, 1242, 4304, 14706, 49761, 167232, 559303, 1864110, 6197472, 20567262, 68166713, 225713280, 746866143, 2470077378, 8166190192, 26990599050, 89190984033, 294691499808, 973574384231, 3216160413654, 10623856065984, 35092075282998, 115910575744921]