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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.

A086687 a(n) = binomial(n!,n).

Table of values

n a(n)
0 1
1 1
2 1
3 20
4 10626
5 190578024
6 189492294437160
7 16321981448897949868560
8 173117930575796585984663510371920
9 300649979042426162195454856425990347600496000
10 109109335363647915965076917082046041529603540914857910625920

List of values

[1, 1, 1, 20, 10626, 190578024, 189492294437160, 16321981448897949868560, 173117930575796585984663510371920, 300649979042426162195454856425990347600496000, 109109335363647915965076917082046041529603540914857910625920]

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

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