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A041721 as a simple table

na(n)
01
12
277
3156
46005
512166
6468313
7948792
836522409
973993610
102848279589
115770552788
12222129285533
13450029123854
1417323235991985
1535096501107824
161350990278089297
172737077057286418
18105359918454973181
19213456913967232780
208216722649209818821

[1,2,77,156,6005,12166,468313,948792,36522409,
 73993610,2848279589,5770552788,222129285533,
 450029123854,17323235991985,35096501107824,
 1350990278089297,2737077057286418,
 105359918454973181,213456913967232780,
 8216722649209818821]