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A058006 as a simple table

na(n)
01
10
22
3-4
420
5-100
6620
7-4420
835900
9-326980
103301820
11-36614980
12442386620
13-5784634180
1481393657020
15-1226280710980
1619696509177020
17-335990918918980
186066382786809020
19-115578717622022980
202317323290554617020
21-48773618881154822980

[1,0,2,-4,20,-100,620,-4420,35900,-326980,3301820,
 -36614980,442386620,-5784634180,81393657020,
 -1226280710980,19696509177020,-335990918918980,
 6066382786809020,-115578717622022980,
 2317323290554617020,-48773618881154822980]