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A007872 as a simple table

na(n)
11
21
31
44
59
627
789
8304
9944
103259
1111081
1238044
13132921
14467771
151650279
165907280
1721183657
1876488912
19277631065
201012588940
213707127319
2213632296219
2350292158921
24186165033296
25691181554768
262573423459611

[1,1,1,4,9,27,89,304,944,3259,11081,38044,132921,
 467771,1650279,5907280,21183657,76488912,
 277631065,1012588940,3707127319,13632296219,
 50292158921,186165033296,691181554768,
 2573423459611]