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A258079 as a simple table

na(n)
11
22
36
410
536
6168
71098
81204
92840
1019488
111881124
123105700
13445577184
14105314212224
15134633963520
162167649138304

[1,2,6,10,36,168,1098,1204,2840,19488,1881124,
 3105700,445577184,105314212224,134633963520,
 2167649138304]