A066234 - OEIS

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A066234 as a simple table

n	a(n)
0	1
1	0
2	0
3	0
4	23790
5	1525056
6	44420480
7	768892800
8	9093033300
9	80361232640
10	564369691392
11	3290997166080
12	16459430933400
13	72362333294400
14	285055580709120
15	1021529151913088
16	3371180795232510
17	10348222578720000

[1,0,0,0,23790,1525056,44420480,768892800, 9093033300,80361232640,564369691392,3290997166080, 16459430933400,72362333294400,285055580709120, 1021529151913088,3371180795232510, 10348222578720000]