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A074663 as a simple table

na(n)
12
24
37
414
531
684
7195
8482
91131
102620
115957
1213502
1329911
1465820
15143551
16311074
17669543
181435388
193061571
206503526
2113771989
2229061728
2361159219
24128372210
25268845359
26561835492
271171862289
282440014306
295072185867
3010528184756

[2,4,7,14,31,84,195,482,1131,2620,5957,13502,
 29911,65820,143551,311074,669543,1435388,3061571,
 6503526,13771989,29061728,61159219,128372210,
 268845359,561835492,1171862289,2440014306,
 5072185867,10528184756]