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.

A129530 a(n) = (1/2)*n*(n-1)*3^(n-1).

Table of values

n a(n)
0 0
1 0
2 3
3 27
4 162
5 810
6 3645
7 15309
8 61236
9 236196
10 885735
11 3247695
12 11691702
13 41452398
14 145083393
15 502211745
16 1721868840
17 5854354056
18 19758444939
19 66248903619
20 220829678730
21 732224724210
22 2416341589893
23 7939408081077

List of values

[0, 0, 3, 27, 162, 810, 3645, 15309, 61236, 236196, 885735, 3247695, 11691702, 41452398, 145083393, 502211745, 1721868840, 5854354056, 19758444939, 66248903619, 220829678730, 732224724210, 2416341589893, 7939408081077]