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A158960 as a simple table

na(n)
01
12
2-46
3-292
46316
571032
6-1436936
7-24183472
8454560656
910582510112
10-183387274976
11-5658029605952
1289546942024896
133573911647620992
14-51057689020940416
15-2603853531376575232
1633085559702952161536
172149253944507164508672

[1,2,-46,-292,6316,71032,-1436936,-24183472,
 454560656,10582510112,-183387274976,
 -5658029605952,89546942024896,3573911647620992,
 -51057689020940416,-2603853531376575232,
 33085559702952161536,2149253944507164508672]