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A252215 as a simple table

na(n)
13147
22836
310486
444776
5188866
6801122
73410786
814539238
961939226
10263654432
111122558798
124780929468
1320360099382
1486698049968
15369189620578
161572170465502
176694947958402
1828509673198294
19121405330624876

[3147,2836,10486,44776,188866,801122,3410786,
 14539238,61939226,263654432,1122558798,4780929468,
 20360099382,86698049968,369189620578,
 1572170465502,6694947958402,28509673198294,
 121405330624876]