A073392 - OEIS

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A073392 as a simple table

n	a(n)
0	1
1	12
2	96
3	616
4	3444
5	17472
6	82432
7	367488
8	1565280
9	6421376
10	25525248
11	98773248
12	373450112
13	1383674880
14	5036089344
15	18041821184
16	63727070976
17	222249968640
18	766234140672
19	2614196680704
20	8834194123776

[1,12,96,616,3444,17472,82432,367488,1565280, 6421376,25525248,98773248,373450112,1383674880, 5036089344,18041821184,63727070976,222249968640, 766234140672,2614196680704,8834194123776]