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.

A337552 a(0) = 1; a(n) = Sum_{k=1..n} binomial(n,k) * (3*k-2) * a(n-k).

Table of values

n a(n)
0 1
1 1
2 6
3 37
4 330
5 3613
6 47652
7 732625
8 12875118
9 254540413
10 5591435136
11 135108218353
12 3561467337546
13 101704047315037
14 3127751183515020
15 103059820083026449
16 3622223857996975110
17 135266462416766669917
18 5348457650664454581240
19 223227700948792985989777

List of values

[1, 1, 6, 37, 330, 3613, 47652, 732625, 12875118, 254540413, 5591435136, 135108218353, 3561467337546, 101704047315037, 3127751183515020, 103059820083026449, 3622223857996975110, 135266462416766669917, 5348457650664454581240, 223227700948792985989777]