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.

A386453 a(0) = 1; a(n) = a(n-1) + Sum_{k=0..n-1} binomial(k+2,3) * a(k) * a(n-1-k).

Table of values

n a(n)
0 1
1 1
2 2
3 11
4 131
5 2888
6 107027
7 6212005
8 534389458
9 65203760863
10 10889677250198
11 2417582805875622
12 696275799766601842
13 254839529849806176727
14 116462397939843834894367
15 65452132793842930368844779
16 44638474752168615525812508053
17 36514339485766910607857620043816

List of values

[1, 1, 2, 11, 131, 2888, 107027, 6212005, 534389458, 65203760863, 10889677250198, 2417582805875622, 696275799766601842, 254839529849806176727, 116462397939843834894367, 65452132793842930368844779, 44638474752168615525812508053, 36514339485766910607857620043816]