A324729 - OEIS

%I #7 Mar 17 2019 21:07:29

%S 0,1,2,1,3,2,4,1,2,3,5,2,6,2,2,2,7,3,8,2,4,2,9,2,3,3,2,2,10,1,11,1,4,

%T 3,3,2,12,2,2,3,13,3,14,2,2,3,15,2,4,5,6,2,16,4,5,2,2,5,17,3,18,5,4,3,

%U 6,2,19,3,4,3,20,2,21,3,3,4,4,2,22,2,2,6,23,5,3,4,4,4,24,4,4,3,6,6,4,4,25,4,2,2,26,4,27,2,2

%N a(n) = A000120(A323243(n)).

%H Antti Karttunen, <a href="/A324729/b324729.txt">Table of n, a(n) for n = 1..10000</a> (based on Hans Havermann's factorization of A156552)

%H <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>

%H <a href="/index/Pri#prime_indices">Index entries for sequences computed from indices in prime factorization</a>

%H <a href="/index/Si#SIGMAN">Index entries for sequences related to sigma(n)</a>

%F a(n) = A000120(A323243(n)).

%F a(A000040(n)) = n.

%o (PARI) A324729(n) = hammingweight(A323243(n)); \\ Needs also code from A323243.

%Y Cf. A000120, A323243, A324730.

%K nonn

%O 1,3

%A _Antti Karttunen_, Mar 17 2019