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A220772 as a simple table

na(n)
01
14
221
354
4343
51225
67104
731777
8169952
9819260
104234749
1121008157
12107087889
13536982808
142721665059
1513704483996
1669301052416
17349520578291
181765820428959
198911657997748
2045005845549969
21227191526564923
221147192132487813
235791672997769659

[1,4,21,54,343,1225,7104,31777,169952,819260,
 4234749,21008157,107087889,536982808,2721665059,
 13704483996,69301052416,349520578291,
 1765820428959,8911657997748,45005845549969,
 227191526564923,1147192132487813,5791672997769659]