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A200319 as a simple table

n a(n)
1 1
2 2
3 12
4 132
5 2040
6 40440
7 979440
8 28034160
9 925858080
10 34654465440
11 1449705660480
12 67029745527360
13 3394417068282240
14 186842736763562880
15 11107390768144070400
16 709223357051739129600
17 48408150749346010022400
18 3517279496138031162739200
19 271050342684747077612160000

[1,2,12,132,2040,40440,979440,28034160,925858080,
 34654465440,1449705660480,67029745527360,
 3394417068282240,186842736763562880,
 11107390768144070400,709223357051739129600,
 48408150749346010022400,3517279496138031162739200,
 271050342684747077612160000]

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Last modified December 1 20:25 EST 2021. Contains 349435 sequences. (Running on oeis4.)