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.

A317663 G.f.: Sum_{n>=0} ( (1+x)^n - 1 )^n * 3^n / (4 - 3*(1+x)^n)^(n+1).

Table of values

n a(n)
0 1
1 3
2 54
3 1494
4 58248
5 2921346
6 179119836
7 12981530772
8 1085678924472
9 102911898062376
10 10903265835968178
11 1276820000444309958
12 163765996498409795046
13 22831772648676453195534
14 3437850237146915605162722
15 555999871854064840852040190
16 96123855383854022518187481072
17 17690662829477220311541393099324
18 3453143617992367493730150308612370

List of values

[1, 3, 54, 1494, 58248, 2921346, 179119836, 12981530772, 1085678924472, 102911898062376, 10903265835968178, 1276820000444309958, 163765996498409795046, 22831772648676453195534, 3437850237146915605162722, 555999871854064840852040190, 96123855383854022518187481072, 17690662829477220311541393099324, 3453143617992367493730150308612370]