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A232049 as a simple table

na(n)
18
221
380
4318
51315
65364
721680
887452
9352931
101425261
115757064
1223253889
1393921193
14379334811
151532086339
166187939435
1724992490166
18100942222266
19407695589939
201646641727295
216650621491464
2226861196902537
23108489696252447

[8,21,80,318,1315,5364,21680,87452,352931,1425261,
 5757064,23253889,93921193,379334811,1532086339,
 6187939435,24992490166,100942222266,407695589939,
 1646641727295,6650621491464,26861196902537,
 108489696252447]