A283629 - OEIS

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A283629 as a simple table

n	a(n)
1	0
2	0
3	37
4	388
5	3729
6	28828
7	203025
8	1325980
9	8216341
10	48912768
11	282293033
12	1589466368
13	8771503165
14	47606031352
15	254776347029
16	1347286728096
17	7051427209337
18	36575153581764
19	188217385278837
20	961810924181084

[0,0,37,388,3729,28828,203025,1325980,8216341, 48912768,282293033,1589466368,8771503165, 47606031352,254776347029,1347286728096, 7051427209337,36575153581764,188217385278837, 961810924181084]