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.

A097786 a(n) = 3*a(n-1) + C(n+3,3) for n > 0; a(0)=1.

Table of values

n a(n)
0 1
1 7
2 31
3 113
4 374
5 1178
6 3618
7 10974
8 33087
9 99481
10 298729
11 896551
12 2690108
13 8070884
14 24213332
15 72640812
16 217923405
17 653771355
18 1961315395
19 5883947725
20 17651844946
21 52955536862
22 158866612886
23 476599841258
24 1429799526699

List of values

[1, 7, 31, 113, 374, 1178, 3618, 10974, 33087, 99481, 298729, 896551, 2690108, 8070884, 24213332, 72640812, 217923405, 653771355, 1961315395, 5883947725, 17651844946, 52955536862, 158866612886, 476599841258, 1429799526699]