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A089181 as a simple table

na(n)
11
22
3-3
4-20
5-19
6102
7337
8-40
9-2439
10-4598
117877
1247940
1340741
14-254098
15-793383
16191920
175937521
1810531602
19-20499443
20-114720100
21-85944099
22631152502
231863913697
24-690240120
25-14427876119
26-24024071398
2752946990037
28274062479860
29177496029461

[1,2,-3,-20,-19,102,337,-40,-2439,-4598,7877,
 47940,40741,-254098,-793383,191920,5937521,
 10531602,-20499443,-114720100,-85944099,631152502,
 1863913697,-690240120,-14427876119,-24024071398,
 52946990037,274062479860,177496029461]