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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.

A382678 a(n) = Sum_{k=0..n} (k!)^2 * binomial(k+3,3) * Stirling2(n+1,k+1)^2.

Table of values

n a(n)
0 1
1 5
2 77
3 2357
4 118061
5 8712245
6 886143917
7 118592620277
8 20176999414061
9 4249819031692085
10 1084956766012858157
11 329975948760472311797
12 117851658189070970988461
13 48830366210401091606537525
14 23228207308210113849419226797
15 12571433948267218576823401692917

List of values

[1, 5, 77, 2357, 118061, 8712245, 886143917, 118592620277, 20176999414061, 4249819031692085, 1084956766012858157, 329975948760472311797, 117851658189070970988461, 48830366210401091606537525, 23228207308210113849419226797, 12571433948267218576823401692917]

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

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