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A275290 as a simple table

na(n)
51
63
722
886
9470
102066
1110299
1247503
13229792
141081851
155189068
1624671320
17118223765
18565269659
192713032552
2013022313334
2162644482305
22301600159952
231454293747517
247019496361595
2533922782653124
26164099194834163
27794642770006896
283851565096708617

[1,3,22,86,470,2066,10299,47503,229792,1081851,
 5189068,24671320,118223765,565269659,2713032552,
 13022313334,62644482305,301600159952,
 1454293747517,7019496361595,33922782653124,
 164099194834163,794642770006896,3851565096708617]