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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.

A343899 a(n) = Sum_{k=0..n} (k!)^k * binomial(n,k).

Table of values

n a(n)
0 1
1 2
2 7
3 232
4 332669
5 24884861086
6 139314218808181027
7 82606412229102532926819812
8 6984964247802365417561163907914436537
9 109110688415634181158572146813823590758078301022074
10 395940866122426284350759726810156652343313286283891529199276099071

List of values

[1, 2, 7, 232, 332669, 24884861086, 139314218808181027, 82606412229102532926819812, 6984964247802365417561163907914436537, 109110688415634181158572146813823590758078301022074, 395940866122426284350759726810156652343313286283891529199276099071]

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

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