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.

A172066 Expansion of (2/(3*sqrt(1-4*z)-1+4*z))*((1-sqrt(1-4*z))/(2*z))^k with k=9.

Table of values

n a(n)
0 1
1 10
2 67
3 376
4 1912
5 9142
6 41941
7 186880
8 815083
9 3498146
10 14827487
11 62236064
12 259187048
13 1072567256
14 4415408372
15 18098359424
16 73915594466
17 300958990724
18 1222228100590
19 4952609171080
20 20030298812596
21 80876902778482

List of values

[1, 10, 67, 376, 1912, 9142, 41941, 186880, 815083, 3498146, 14827487, 62236064, 259187048, 1072567256, 4415408372, 18098359424, 73915594466, 300958990724, 1222228100590, 4952609171080, 20030298812596, 80876902778482]