A177759 - OEIS

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A177759 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2304
7	35280
8	811008
9	5080320
10	38784000
11	153679680
12	699678720
13	2120152320
14	7113012480
15	18036018000
16	49416536064
17	110279070720
18	261526745088
19	530024705280
20	1128038400000

[0,0,0,0,0,2304,35280,811008,5080320,38784000, 153679680,699678720,2120152320,7113012480, 18036018000,49416536064,110279070720,261526745088, 530024705280,1128038400000]