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.

A375455 Expansion of g.f. A(x) satisfying A(x)^2 = A( x^2/(1-2*x)^5 ).

Table of values

n a(n)
1 1
2 5
3 20
4 90
5 470
6 2566
7 13885
8 74435
9 400530
10 2183930
11 12112167
12 68351005
13 392055575
14 2281947435
15 13450584580
16 80110426698
17 481032299830
18 2905955107950
19 17629836770715
20 107254895106265
21 653597751574541
22 3986386422481665
23 24321398369358070
24 148386468804372420
25 905156432977350225

List of values

[1, 5, 20, 90, 470, 2566, 13885, 74435, 400530, 2183930, 12112167, 68351005, 392055575, 2281947435, 13450584580, 80110426698, 481032299830, 2905955107950, 17629836770715, 107254895106265, 653597751574541, 3986386422481665, 24321398369358070, 148386468804372420, 905156432977350225]