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A017798 as a simple table

na(n)
01
182
23321
388560
41749060
527285336
6350161812
73801756816
835641470150
9293052087900
102139280241670
1114002561581840
1282848489359220
13446107250395800
142198671448379300
159967310565986160
1641738112995067045
17162042085745554410
18585151976303390925

[1,82,3321,88560,1749060,27285336,350161812,
 3801756816,35641470150,293052087900,2139280241670,
 14002561581840,82848489359220,446107250395800,
 2198671448379300,9967310565986160,
 41738112995067045,162042085745554410,
 585151976303390925]