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A012624 as a simple table

na(n)
02
1-12
2358
3-19992
42033802
5-315229860
670634865390
7-21500632868400
88568722761815570
9-4328828352860125500
102705283169021072846710
11-2049095504528923919551560
121849840972092365870411519130

[2,-12,358,-19992,2033802,-315229860,70634865390,
 -21500632868400,8568722761815570,
 -4328828352860125500,2705283169021072846710,
 -2049095504528923919551560,
 1849840972092365870411519130]