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A349963 as a simple table

n a(n)
0 1
1 2
2 20
3 288
4 5664
5 141600
6 4298944
7 153638912
8 6319260672
9 294044152320
10 15272286131200
11 875880428003328
12 54976337351106560
13 3748609104907476992
14 275924407293425336320
15 21806398621389422592000
16 1841661678145084557099008
17 165530736067119754944577536

[1,2,20,288,5664,141600,4298944,153638912,
 6319260672,294044152320,15272286131200,
 875880428003328,54976337351106560,
 3748609104907476992,275924407293425336320,
 21806398621389422592000,1841661678145084557099008,
 165530736067119754944577536]

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Last modified July 16 00:06 EDT 2024. Contains 374343 sequences. (Running on oeis4.)