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.

A090409 a(n) = (7*8^n + 2*(-1)^n)/9.

Table of values

n a(n)
0 1
1 6
2 50
3 398
4 3186
5 25486
6 203890
7 1631118
8 13048946
9 104391566
10 835132530
11 6681060238
12 53448481906
13 427587855246
14 3420702841970
15 27365622735758
16 218924981886066
17 1751399855088526
18 14011198840708210
19 112089590725665678
20 896716725805325426
21 7173733806442603406

List of values

[1, 6, 50, 398, 3186, 25486, 203890, 1631118, 13048946, 104391566, 835132530, 6681060238, 53448481906, 427587855246, 3420702841970, 27365622735758, 218924981886066, 1751399855088526, 14011198840708210, 112089590725665678, 896716725805325426, 7173733806442603406]