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A066672 Exponents of powers of 2 displayed in A066671: 2^a[n] is the largest even divisor of A066669(n). 4

%I

%S 1,1,1,2,1,1,2,1,1,2,2,2,2,2,3,2,3,3,2,2,3,1,1,2,3,2,3,3,2,1,4,2,2,3,

%T 3,3,3,3,1,3,3,3,3,3,2,1,5,3,4,4,2,1,3,4,4,3,3,1,5,4,4,3,3,2,4,2,4,4,

%U 2,3,5,4,3,4,4,1,1,4,2,3,4,2,3,1,4,3,5,2,6,5,5,4,5,5,4,3,1,4,6,5,4,1,3,4,3

%N Exponents of powers of 2 displayed in A066671: 2^a[n] is the largest even divisor of A066669(n).

%e 263rd term in A066669 is 769 and Phi[769] = 768 = 3.256, so a(263) = Log[2,256] = Log[2,Phi[769]/3] = Log[2,Phi[A066669(263)]/A066670(263)] = 8.

%Y Cf. A000010, A066669-A066672.

%K nonn

%O 1,4

%A _Labos Elemer_, Dec 18 2001

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Last modified June 4 16:06 EDT 2020. Contains 334828 sequences. (Running on oeis4.)