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.

A299429 a(n) = binomial((n+1)*(2*n+1), n) / ((n+1)*(2*n+1)).

Table of values

n a(n)
0 1
1 1
2 7
3 117
4 3311
5 135408
6 7324878
7 495729741
8 40411916335
9 3861208027677
10 423601805745460
11 52513639293534510
12 7263163165618323432
13 1109176062938132317300
14 185415009041446934481180
15 33681956588219177374026429
16 6607825171826115567872400495
17 1392510451119380284814728497375

List of values

[1, 1, 7, 117, 3311, 135408, 7324878, 495729741, 40411916335, 3861208027677, 423601805745460, 52513639293534510, 7263163165618323432, 1109176062938132317300, 185415009041446934481180, 33681956588219177374026429, 6607825171826115567872400495, 1392510451119380284814728497375]