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A012557 as a simple table

n a(n)
0 2
1 -4
2 350
3 -11240
4 1461658
5 -167279660
6 35689423926
7 -8594866078032
8 2902777731046578
9 -1163594305273709524
10 584328120817240344206
11 -346295976826690961613880
12 244030359200524004600252746

[2,-4,350,-11240,1461658,-167279660,35689423926,
 -8594866078032,2902777731046578,
 -1163594305273709524,584328120817240344206,
 -346295976826690961613880,
 244030359200524004600252746]

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Last modified February 4 22:05 EST 2023. Contains 360082 sequences. (Running on oeis4.)