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A072287 as a simple table

na(n)
01
12
27
347
4155
52027
66597
742835
8138875
93599155
1011654465
1175457289
12244238477
133161900479
1410232916665
1566231885067
16214336798299
1711097918730051
1835913975952793
19232441522435405
20752199270651129

[1,2,7,47,155,2027,6597,42835,138875,3599155,
 11654465,75457289,244238477,3161900479,
 10232916665,66231885067,214336798299,
 11097918730051,35913975952793,232441522435405,
 752199270651129]