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a(n) is the binary length of A324878(n).
5

%I #6 Mar 27 2019 18:56:08

%S 0,0,0,1,0,1,0,0,3,0,0,1,0,1,4,4,0,3,0,0,5,1,0,0,0,1,4,1,0,4,0,4,0,1,

%T 5,4,0,1,7,0,0,5,0,1,4,1,0,4,0,0,2,1,0,4,6,0,9,1,0,0,0,1,5,6,0,1,0,1,

%U 0,5,0,5,0,1,5,1,6,7,0,4,0,1,0,1,8,1,11,0,0,6,7,1,0,1,9,5,0,1,7,5,0,2,0,0,6

%N a(n) is the binary length of A324878(n).

%H Antti Karttunen, <a href="/A324862/b324862.txt">Table of n, a(n) for n = 1..10000</a>

%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 If A324878(n) = 0, a(n) = 0, otherwise a(n) = A070939(A324878(n)) = 1 + A000523(A324878(n)).

%F a(p) = 0 for all primes p.

%o (PARI) A324862(n) = #binary(A324878(n)); \\ Needs also code from A324878.

%Y Cf. A000040, A000523, A070939, A324878, A324861, A324864, A324874.

%K nonn

%O 1,9

%A _Antti Karttunen_, Mar 21 2019