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A074528 as a simple table

na(n)
03
111
249
3251
41393
58051
647449
7282251
81686433
910097891
1060526249
11362976251
122177317873
1313062296531
1478368963449
15470199366251
162821153019713
1716926788715971
18101560344351049
19609360902796251

[3,11,49,251,1393,8051,47449,282251,1686433,
 10097891,60526249,362976251,2177317873,
 13062296531,78368963449,470199366251,
 2821153019713,16926788715971,101560344351049,
 609360902796251]