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.

A360083 a(n) = Sum_{k=0..n} binomial(5*k,n-k) * Catalan(k).

Table of values

n a(n)
0 1
1 1
2 7
3 35
4 189
5 1092
6 6538
7 40278
8 253730
9 1626858
10 10582616
11 69669273
12 463319257
13 3107941405
14 21004392887
15 142882885210
16 977562617826
17 6722361860888
18 46438235933700
19 322111000796428
20 2242538435656450
21 15665017062799230
22 109761527468995102

List of values

[1, 1, 7, 35, 189, 1092, 6538, 40278, 253730, 1626858, 10582616, 69669273, 463319257, 3107941405, 21004392887, 142882885210, 977562617826, 6722361860888, 46438235933700, 322111000796428, 2242538435656450, 15665017062799230, 109761527468995102]

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

Content is available under The OEIS End-User License Agreement.