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.

A339252 a(0) = 1, a(1) = 4, a(2) = 11, and a(n) = 4*a(n-1) - 4*a(n-2) for n >= 3.

Table of values

n a(n)
0 1
1 4
2 11
3 28
4 68
5 160
6 368
7 832
8 1856
9 4096
10 8960
11 19456
12 41984
13 90112
14 192512
15 409600
16 868352
17 1835008
18 3866624
19 8126464
20 17039360
21 35651584
22 74448896
23 155189248
24 322961408
25 671088640
26 1392508928
27 2885681152
28 5972688896
29 12348030976
30 25501368320
31 52613349376

List of values

[1, 4, 11, 28, 68, 160, 368, 832, 1856, 4096, 8960, 19456, 41984, 90112, 192512, 409600, 868352, 1835008, 3866624, 8126464, 17039360, 35651584, 74448896, 155189248, 322961408, 671088640, 1392508928, 2885681152, 5972688896, 12348030976, 25501368320, 52613349376]