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.

A346372 a(0) = 1; a(n) = n * a(n-1) + (1/n) * Sum_{k=3..n} (binomial(n,k) * k!)^2 * a(n-k) / k.

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 124
5 2396
6 64856
7 2452472
8 124483360
9 8146185504
10 668645524032
11 67374446014272
12 8183368905811584
13 1179807474740449920
14 199266648878034317568
15 38984601149045449948416
16 8748103140554862876727296
17 2232274640259371687436982272
18 642805438643602793466093711360

List of values

[1, 1, 2, 10, 124, 2396, 64856, 2452472, 124483360, 8146185504, 668645524032, 67374446014272, 8183368905811584, 1179807474740449920, 199266648878034317568, 38984601149045449948416, 8748103140554862876727296, 2232274640259371687436982272, 642805438643602793466093711360]