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.

A307469 a(n) = 2*a(n-1) + 6*a(n-2) for n >= 2, a(0) = 1, a(1) = 5.

Table of values

n a(n)
0 1
1 5
2 16
3 62
4 220
5 812
6 2944
7 10760
8 39184
9 142928
10 520960
11 1899488
12 6924736
13 25246400
14 92041216
15 335560832
16 1223368960
17 4460102912
18 16260419584
19 59281456640
20 216125430784
21 787939601408
22 2872631787520
23 10472901183488
24 38181593092096
25 139200593285120

List of values

[1, 5, 16, 62, 220, 812, 2944, 10760, 39184, 142928, 520960, 1899488, 6924736, 25246400, 92041216, 335560832, 1223368960, 4460102912, 16260419584, 59281456640, 216125430784, 787939601408, 2872631787520, 10472901183488, 38181593092096, 139200593285120]