A178689 - OEIS

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A178689 as a simple table

n	a(n)
0	0
1	0
2	0
3	10
4	253
5	6384
6	208887
7	9673189
8	651633791
9	63901292323
10	9040801794022
11	1825884406581355
12	521181413335003984
13	208402574279716434454
14	115825454535371969786250
15	88852094572776191675804592

[0,0,0,10,253,6384,208887,9673189,651633791, 63901292323,9040801794022,1825884406581355, 521181413335003984,208402574279716434454, 115825454535371969786250, 88852094572776191675804592]