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.

A002447 Expansion of 1/(1-2*x^2-3*x^3).

Table of values

n a(n)
0 1
1 0
2 2
3 3
4 4
5 12
6 17
7 36
8 70
9 123
10 248
11 456
12 865
13 1656
14 3098
15 5907
16 11164
17 21108
18 40049
19 75708
20 143422
21 271563
22 513968
23 973392
24 1842625
25 3488688
26 6605426
27 12505251
28 23676916
29 44826780
30 84869585
31 160684308

List of values

[1, 0, 2, 3, 4, 12, 17, 36, 70, 123, 248, 456, 865, 1656, 3098, 5907, 11164, 21108, 40049, 75708, 143422, 271563, 513968, 973392, 1842625, 3488688, 6605426, 12505251, 23676916, 44826780, 84869585, 160684308]