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A322984 Number of iterations of A011371(x) = x - A000120(x) needed to reach an odd number, when starting from x = 2n. 3

%I #8 Jan 07 2019 11:12:42

%S 1,1,2,1,2,3,1,1,2,3,1,2,1,1,2,1,2,3,1,2,1,1,2,3,1,1,2,1,3,2,1,1,2,3,

%T 1,2,1,1,2,3,1,1,2,1,3,2,1,2,1,1,2,1,3,2,1,1,2,2,1,3,1,1,4,1,2,3,1,2,

%U 1,1,2,3,1,1,2,1,3,2,1,2,1,1,2,1,3,2,1,1,2,2,1,3,1,1,4,5,1,1,2,1,3,2,1,1,2

%N Number of iterations of A011371(x) = x - A000120(x) needed to reach an odd number, when starting from x = 2n.

%H Antti Karttunen, <a href="/A322984/b322984.txt">Table of n, a(n) for n = 1..16384</a>

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

%F a(n) = A322983(2*n).

%o (PARI)

%o A011371(n) = (n - hammingweight(n));

%o A322983(n) = if((n%2),0,1+A322983(A011371(n)));

%o A322984(n) = A322983(n+n);

%Y Bisection of A322983.

%Y Cf. A000120, A011371.

%Y Cf. also A322997.

%K nonn,base

%O 1,3

%A _Antti Karttunen_, Jan 05 2019

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Last modified July 8 22:14 EDT 2024. Contains 374170 sequences. (Running on oeis4.)