A013424 - OEIS

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A013424 as a simple table

n	a(n)
0	3
1	-7
2	497
3	-12031
4	1828937
5	-78420175
6	33163987313
7	-1847431936639
8	1836279812106137
9	-90066800149588687
10	250185010809212552449
11	-1037398294518312251519
12	71571989564012181483901417

[3,-7,497,-12031,1828937,-78420175,33163987313, -1847431936639,1836279812106137, -90066800149588687,250185010809212552449, -1037398294518312251519, 71571989564012181483901417]