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A066780 as a simple table

n a(n)
1 1
2 3
3 12
4 84
5 504
6 6048
7 48384
8 725760
9 9434880
10 169827840
11 2037934080
12 57062154240
13 798870159360
14 19172883824640
15 460149211791360
16 14264625565532160
17 256763260179578880
18 10013767147003576320
19 200275342940071526400
20 8411564403483004108800 

[1,3,12,84,504,6048,48384,725760,9434880,
 169827840,2037934080,57062154240,798870159360,
 19172883824640,460149211791360,14264625565532160,
 256763260179578880,10013767147003576320,
 200275342940071526400,8411564403483004108800]

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Last modified June 16 19:52 EDT 2024. Contains 373432 sequences. (Running on oeis4.)