A343445 - OEIS

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A343445 as a simple table

n	a(n)
0	-1
1	1
2	3
3	24
4	315
5	5760
6	135135
7	3870720
8	130945815
9	5109350400
10	225881530875
11	11158821273600
12	609202488769875
13	36422392637030400
14	2366751668870964375
15	166086110424858624000
16	12517749576658530579375

[-1,1,3,24,315,5760,135135,3870720,130945815, 5109350400,225881530875,11158821273600, 609202488769875,36422392637030400, 2366751668870964375,166086110424858624000, 12517749576658530579375]