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.

A203508 G.f.: Product_{n>=0} (1+a(n)*x^(n+1))^3 = Sum_{n>=0} a(n)*x^n.

Table of values

n a(n)
0 1
1 3
2 12
3 64
4 354
5 2160
6 13518
7 88374
8 584409
9 3980736
10 27291825
11 190771995
12 1339606882
13 9539905173
14 68140709607
15 492072701284
16 3560322659379
17 25984705308156
18 189940383845883
19 1398103463338725
20 10302144982761213
21 76363018655732307
22 566463003067056519

List of values

[1, 3, 12, 64, 354, 2160, 13518, 88374, 584409, 3980736, 27291825, 190771995, 1339606882, 9539905173, 68140709607, 492072701284, 3560322659379, 25984705308156, 189940383845883, 1398103463338725, 10302144982761213, 76363018655732307, 566463003067056519]