A063709 - OEIS

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A063709 as a simple table

n	a(n)
0	0
1	0
2	0
3	3
4	16
5	5
6	576
7	2023
8	4096
9	227529
10	2656000
11	26301011
12	443667456
13	5268921853
14	294332416
15	820814907375
16	19909425135616
17	225992064764177
18	5838869363687424
19	43054524724611979
20	296380418621440000

[0,0,0,3,16,5,576,2023,4096,227529,2656000, 26301011,443667456,5268921853,294332416, 820814907375,19909425135616,225992064764177, 5838869363687424,43054524724611979, 296380418621440000]