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A196687 as a simple table

n a(n)
1 1
2 4
3 24
4 336
5 5520
6 203040
7 7025760
8 510370560
9 30163311360
10 3577017024000
11 319851801561600
12 55850407258060800
13 7021439018770176000
14 1692163531361176473600
15 284409062346887622144000
16 90395009213694143422464000
17 19571060809440210728706048000
18 7929132907666579072319471616000

[1,4,24,336,5520,203040,7025760,510370560,
 30163311360,3577017024000,319851801561600,
 55850407258060800,7021439018770176000,
 1692163531361176473600,284409062346887622144000,
 90395009213694143422464000,
 19571060809440210728706048000,
 7929132907666579072319471616000]

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Last modified September 19 19:40 EDT 2024. Contains 376014 sequences. (Running on oeis4.)