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.

A174347 Expansion of (1 - 2*x - sqrt(1 - 8*x + 8*x^2))/(2*x*(1-x)).

Table of values

n a(n)
0 1
1 3
2 11
3 47
4 223
5 1135
6 6063
7 33535
8 190399
9 1103231
10 6497407
11 38779647
12 234043647
13 1425869567
14 8757326591
15 54163521535
16 337060285439
17 2108928587775
18 13258969458687
19 83720567447551
20 530692157964287
21 3375836610256895

List of values

[1, 3, 11, 47, 223, 1135, 6063, 33535, 190399, 1103231, 6497407, 38779647, 234043647, 1425869567, 8757326591, 54163521535, 337060285439, 2108928587775, 13258969458687, 83720567447551, 530692157964287, 3375836610256895]