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A013413 as a simple table

na(n)
01
10
20
390
4-2520
5368550
6-29313900
77122965850
8-1133998866000
9432213196164750
10-115564330313932500
1164225795369647161250
12-25965004352151980115000
1319884500689553832175593750

[1,0,0,90,-2520,368550,-29313900,7122965850,
 -1133998866000,432213196164750,
 -115564330313932500,64225795369647161250,
 -25965004352151980115000,
 19884500689553832175593750]