A013296 - OEIS

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A013296 as a simple table

n	a(n)
0	0
1	1
2	6
3	150
4	7560
5	642600
6	82328400
7	14799985200
8	3550699152000
9	1095489931536000
10	422416533258720000
11	199001229578030880000
12	112442434205652270720000
13	75042084306026165328000000

[0,1,6,150,7560,642600,82328400,14799985200, 3550699152000,1095489931536000,422416533258720000, 199001229578030880000,112442434205652270720000, 75042084306026165328000000]

[0,1,6,150,7560,642600,82328400,14799985200,
 3550699152000,1095489931536000,422416533258720000,
 199001229578030880000,112442434205652270720000,
 75042084306026165328000000]