A010087 - OEIS

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A010087 as a simple table

n	a(n)
0	1
1	0
2	0
3	651
4	9765
5	109368
6	1057224
7	8649279
8	60544953
9	369776680
10	1996794072
11	9621890019
12	41694856749
13	163568562192
14	584173436400
15	1908310936455
16	5724932809365
17	15827726179440
18	40448633569680

[1,0,0,651,9765,109368,1057224,8649279,60544953, 369776680,1996794072,9621890019,41694856749, 163568562192,584173436400,1908310936455, 5724932809365,15827726179440,40448633569680]