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.

A385945 a(0) = 1; a(n) = Sum_{k=0..n-1} binomial(k+3,3) * binomial(n-1,k) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 5
3 63
4 1533
5 62736
6 3969387
7 366744330
8 47441881377
9 8313978813120
10 1921417594566561
11 572533956456137424
12 215766174031503450885
13 101144655173329674617088
14 58127411808811103704523775
15 40435528907318329027426583376
16 33666103690446265067517343384833

List of values

[1, 1, 5, 63, 1533, 62736, 3969387, 366744330, 47441881377, 8313978813120, 1921417594566561, 572533956456137424, 215766174031503450885, 101144655173329674617088, 58127411808811103704523775, 40435528907318329027426583376, 33666103690446265067517343384833]