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A196148 as a simple table

na(n)
01
12
27
330
4146
5772
64331
725398
8154158
9961820
106137734
1139909740
12263665252
131765815560
1411966535091
1581937361702
16566185489878
173944202596652
1827676632525362
19195481707009220
201388890568962556

[1,2,7,30,146,772,4331,25398,154158,961820,
 6137734,39909740,263665252,1765815560,11966535091,
 81937361702,566185489878,3944202596652,
 27676632525362,195481707009220,1388890568962556]