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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.

A234508 5*binomial(9*n+5,n)/(9*n+5).

Table of values

n a(n)
0 1
1 5
2 55
3 775
4 12350
5 211876
6 3818430
7 71282640
8 1366368375
9 26735839650
10 531838637759
11 10723307329700
12 218658647805780
13 4501362056183300
14 93426735902060000
15 1952884185072496992
16 41074876852203972645
17 868669222741822476975
18 18460669540059117038250
19 394033629095915025876750
20 8443512680148379948569910

List of values

[1, 5, 55, 775, 12350, 211876, 3818430, 71282640, 1366368375, 26735839650, 531838637759, 10723307329700, 218658647805780, 4501362056183300, 93426735902060000, 1952884185072496992, 41074876852203972645, 868669222741822476975, 18460669540059117038250, 394033629095915025876750, 8443512680148379948569910]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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