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A081302 as a simple table

na(n)
01
11
221
361
41891
59633
6404713
72997541
8159902271
91564345201
10101406750589
111236882490845
1294479649710811
131382731226210881
14121677107761110993
152079381120597925237
16207197254527662127511
174051708966720224576081

[1,1,21,61,1891,9633,404713,2997541,159902271,
 1564345201,101406750589,1236882490845,
 94479649710811,1382731226210881,
 121677107761110993,2079381120597925237,
 207197254527662127511,4051708966720224576081]