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.

A143990 a(n) = n!*A001515(n-1) with a(0) = 1.

Table of values

n a(n)
0 1
1 1
2 4
3 42
4 888
5 31920
6 1750320
7 136115280
8 14254007040
9 1934091250560
10 330078373228800
11 69199130042380800
12 17481751115946163200
13 5237838647954514201600
14 1836425205487182172262400
15 744852154338379227748608000
16 346052141662324885396697088000
17 182572078442025253754006986752000

List of values

[1, 1, 4, 42, 888, 31920, 1750320, 136115280, 14254007040, 1934091250560, 330078373228800, 69199130042380800, 17481751115946163200, 5237838647954514201600, 1836425205487182172262400, 744852154338379227748608000, 346052141662324885396697088000, 182572078442025253754006986752000]

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

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