A145244 - OEIS

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A145244 as a simple table

n	a(n)
1	1
2	4
3	64
4	832
5	43264
6	1827904
7	308948224
8	42427198528
9	23308417310464
10	10404188730539968
11	18578639958381807616
12	26955458921407543923136
13	156455150623383016555451392

[1,4,64,832,43264,1827904,308948224,42427198528, 23308417310464,10404188730539968, 18578639958381807616,26955458921407543923136, 156455150623383016555451392]