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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.

A336666 a(n) = (n!)^n * [x^n] 1 / (Sum_{k>=0} (-x)^k / (k!)^n)^n.

Table of values

n a(n)
0 1
1 1
2 10
3 1839
4 10386076
5 2920439606255
6 61647526987008365796
7 138198647831589723000626151799
8 44295532378421071881332203441924537230328
9 2630596041328098180368767727753901255310559993154210399
10 36407288356000016897632843477214290941136877077516693440464220432175060

List of values

[1, 1, 10, 1839, 10386076, 2920439606255, 61647526987008365796, 138198647831589723000626151799, 44295532378421071881332203441924537230328, 2630596041328098180368767727753901255310559993154210399, 36407288356000016897632843477214290941136877077516693440464220432175060]

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

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