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%I #21 Dec 12 2019 03:28:52
%S 1,1,2,4,7,14,23,36,72,106,172,314,542,1008,1766,3151
%N Number of prime divisors (counted with multiplicity) of A138613(n).
%C The old entry with this sequence number was a duplicate of A052553.
%F a(n) = A001222(A138613(n)). - _R. J. Mathar_, Sep 21 2008
%Y Cf. A138613, A033766, A001222.
%K nonn,more
%O 1,3
%A _N. J. A. Sloane_, Sep 20 2008
%E a(10) from _R. J. Mathar_, Sep 21 2008
%E a(11)-a(12) from _Donovan Johnson_, Dec 19 2008
%E a(13)-a(16) from _Daniel Suteu_, Dec 11 2019