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.

A166989 G.f.: A(x) = 1/(1 - 2*x - 7*x^2 - 2*x^3 + x^4).

Table of values

n a(n)
0 1
1 2
2 11
3 38
4 156
5 598
6 2353
7 9166
8 35843
9 139956
10 546792
11 2135796
12 8343205
13 32590610
14 127308455
15 497301794
16 1942600788
17 7588340434
18 29642181517
19 115790645854
20 452310642407
21 1766851828392
22 6901817263824
23 26960427965352

List of values

[1, 2, 11, 38, 156, 598, 2353, 9166, 35843, 139956, 546792, 2135796, 8343205, 32590610, 127308455, 497301794, 1942600788, 7588340434, 29642181517, 115790645854, 452310642407, 1766851828392, 6901817263824, 26960427965352]