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.

A380864 a(n) = [x^n] sqrt(1 - 4*x)/(1 - 8*x). Row sums of A380865.

Table of values

n a(n)
0 1
1 6
2 46
3 364
4 2902
5 23188
6 185420
7 1483096
8 11863910
9 94908420
10 759257636
11 6074027496
12 48592102396
13 388736403144
14 3109889739352
15 24879112565936
16 199032881137798
17 1592262978387044
18 12738103567806772
19 101904827587176776
20 815238617162887828
21 6521908924174861784

List of values

[1, 6, 46, 364, 2902, 23188, 185420, 1483096, 11863910, 94908420, 759257636, 6074027496, 48592102396, 388736403144, 3109889739352, 24879112565936, 199032881137798, 1592262978387044, 12738103567806772, 101904827587176776, 815238617162887828, 6521908924174861784]