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.

A209084 a(n) = 2*a(n-1) + 4*a(n-2) with n>1, a(0)=0, a(1)=4.

Table of values

n a(n)
0 0
1 4
2 8
3 32
4 96
5 320
6 1024
7 3328
8 10752
9 34816
10 112640
11 364544
12 1179648
13 3817472
14 12353536
15 39976960
16 129368064
17 418643968
18 1354760192
19 4384096256
20 14187233280
21 45910851584
22 148570636288
23 480784678912
24 1555851902976
25 5034842521600
26 16293092655104

List of values

[0, 4, 8, 32, 96, 320, 1024, 3328, 10752, 34816, 112640, 364544, 1179648, 3817472, 12353536, 39976960, 129368064, 418643968, 1354760192, 4384096256, 14187233280, 45910851584, 148570636288, 480784678912, 1555851902976, 5034842521600, 16293092655104]