A012313 - OEIS

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A012313 as a simple table

n	a(n)
0	1
1	0
2	0
3	0
4	12
5	-60
6	450
7	-2940
8	26768
9	-239904
10	2668680
11	-29987760
12	392312712
13	-5250012768
14	78929218368
15	-1221015912480
16	20751350980608
17	-363744987018624
18	6898607729825472
19	-135014880247703424

[1,0,0,0,12,-60,450,-2940,26768,-239904,2668680, -29987760,392312712,-5250012768,78929218368, -1221015912480,20751350980608,-363744987018624, 6898607729825472,-135014880247703424]