A012370 - OEIS

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A012370 as a simple table

n	a(n)
0	2
1	4
2	-58
3	-1976
4	116042
5	17175244
6	-594271858
7	-470273780336
8	-11672416091758
9	34320709687067284
10	5944386529990688342
11	-5070047337737884665896
12	-2469435785086687214539558

[2,4,-58,-1976,116042,17175244,-594271858, -470273780336,-11672416091758,34320709687067284, 5944386529990688342,-5070047337737884665896, -2469435785086687214539558]