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A042117 as a simple table

na(n)
01
16
27
355
4282
51183
66197
744562
850759
9349116
1016808327
11101199078
12118007405
13927250913
144754261970
1519944298793
16104475755935
17751274590338
18855750346273
195885776667976
20283373030409121
211706123959122702
221989496989531823
2315632602885845463

[1,6,7,55,282,1183,6197,44562,50759,349116,
 16808327,101199078,118007405,927250913,4754261970,
 19944298793,104475755935,751274590338,
 855750346273,5885776667976,283373030409121,
 1706123959122702,1989496989531823,
 15632602885845463]