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A127756 as a simple table

n a(n)
0 1
1 1
2 1
3 5
4 18
5 97
6 600
7 4325
8 35280
9 322578
10 3265920
11 36288097
12 439084800
13 5748019800
14 80951270400
15 1220496081125
16 19615115520000
17 334764638243280
18 6046686277632000
19 115242726703426578

[1,1,1,5,18,97,600,4325,35280,322578,3265920,
 36288097,439084800,5748019800,80951270400,
 1220496081125,19615115520000,334764638243280,
 6046686277632000,115242726703426578]

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Last modified September 2 12:39 EDT 2024. Contains 375613 sequences. (Running on oeis4.)