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a(n) = A056239(A064413(n)).
1

%I #6 May 19 2018 12:38:49

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

%T 7,9,8,10,7,6,7,10,9,11,6,7,8,7,7,8,8,7,8,9,8,11,10,12,8,12,11,13,7,6,

%U 9,13,12,14,8,9,10,7,14,13,15,8,8,9,8,15,14,16,8,10,11,8,11,16,15,17,7,9,10,9,10,9,9,8,17,16,18,11,9,8,12

%N a(n) = A056239(A064413(n)).

%C For visualizing of the EKG-sequence, A064413.

%H Antti Karttunen, <a href="/A304739/b304739.txt">Table of n, a(n) for n = 1..65539</a>

%H <a href="/index/Ed#EKG">Index entries for sequences related to EKG sequence</a>

%F a(n) = A056239(A064413(n)).

%o (PARI)

%o A056239(n) = { my(f); if(1==n, 0, f=factor(n); sum(i=1, #f~, f[i,2] * primepi(f[i,1]))); }

%o A304739(n) = A056239(A064413(n)); \\ Needs also code for A064413.

%Y Cf. A056239, A064413, A304735.

%K nonn

%O 1,3

%A _Antti Karttunen_, May 19 2018