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A076765 as a simple table

na(n)
01
19
272
3568
44473
535217
6277264
72182896
817185905
9135304345
101065248856
118386686504
1266028243177
13519839258913
144092685828128
1532221647366112
16253680493100769
171997222297440041
1815724097886419560
19123795560793916440

[1,9,72,568,4473,35217,277264,2182896,17185905,
 135304345,1065248856,8386686504,66028243177,
 519839258913,4092685828128,32221647366112,
 253680493100769,1997222297440041,
 15724097886419560,123795560793916440]