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A028372 as a simple table

na(n)
12
22
373
473
5241
6241
71009
81009
91009
101009
117561
127561
1321961
1435281
1535281
1635281
1744641
1844641
19374089
20622561
21622561
22622561
234379281
244379281
254379281
2617690689
2717690689
2817690689
2917690689
3017690689
31316234801
321996405009
331996405009
341996405009

[2,2,73,73,241,241,1009,1009,1009,1009,7561,7561,
 21961,35281,35281,35281,44641,44641,374089,622561,
 622561,622561,4379281,4379281,4379281,17690689,
 17690689,17690689,17690689,17690689,316234801,
 1996405009,1996405009,1996405009]