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.

A089603 G.f.: sqrt(1/agm(1, 1-8*x)) = sqrt(o.g.f. for A081085).

Table of values

n a(n)
0 1
1 2
2 8
3 40
4 226
5 1380
6 8880
7 59280
8 406416
9 2842400
10 20186752
11 145119616
12 1053575336
13 7711639760
14 56834201280
15 421327859520
16 3139306406850
17 23494847031300
18 176526280319120
19 1330929290036560
20 10065855468854980
21 76341682531733960
22 580460500453098080

List of values

[1, 2, 8, 40, 226, 1380, 8880, 59280, 406416, 2842400, 20186752, 145119616, 1053575336, 7711639760, 56834201280, 421327859520, 3139306406850, 23494847031300, 176526280319120, 1330929290036560, 10065855468854980, 76341682531733960, 580460500453098080]