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A297341 as a simple table

na(n)
116
255
3421
42119
513067
673147
7427900
82455970
914209144
1081938942
11473153507
122730662734
1315762970998
1490983791633
15525180639202
163031415452562
1717497885523808
18101000671437234
19582993285761072
203365135765337224

[16,55,421,2119,13067,73147,427900,2455970,
 14209144,81938942,473153507,2730662734,
 15762970998,90983791633,525180639202,
 3031415452562,17497885523808,101000671437234,
 582993285761072,3365135765337224]