A213137 - OEIS

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A213137 as a simple table

n	a(n)
0	1
1	-3
2	-3
3	69
4	285
5	-6123
6	-56883
7	1103109
8	19251645
9	-320851083
10	-9828858963
11	130009042149
12	7019067151005
13	-62927791491243
14	-6646083378845043
15	24719268064533189
16	8013257547754474365
17	22024516916447897397

[1,-3,-3,69,285,-6123,-56883,1103109,19251645, -320851083,-9828858963,130009042149,7019067151005, -62927791491243,-6646083378845043, 24719268064533189,8013257547754474365, 22024516916447897397]