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A252900 as a simple table

na(n)
12793
230453
3306680
43255537
533858062
6357165303
73740990254
839381278095
9413451112737
104347775265112
1145683304899259
12480233990713908
135047003232714437
1453050317963040942
15557570119871186926

[2793,30453,306680,3255537,33858062,357165303,
 3740990254,39381278095,413451112737,4347775265112,
 45683304899259,480233990713908,5047003232714437,
 53050317963040942,557570119871186926]