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A296349 Position where binary expansion of n starts in the binary Champernowne sequence A030190. 4

%I #14 Jul 18 2022 19:33:01

%S 0,1,2,4,6,9,12,15,18,22,26,30,34,38,42,46,50,55,60,65,70,75,80,85,90,

%T 95,100,105,110,115,120,125,130,136,142,148,154,160,166,172,178,184,

%U 190,196,202,208,214,220,226,232,238,244,250,256,262,268,274,280,286,292

%N Position where binary expansion of n starts in the binary Champernowne sequence A030190.

%e A030190 begins as follows (the bits are indexed starting at 0):

%e 0,

%e 1,

%e 1, 0,

%e 1, 1,

%e 1, 0, 0,

%e 1, 0, 1,

%e 1, 1, 0,

%e 1, 1, 1,

%e 1, 0, 0, 0,

%e 1, 0, 0, 1,

%e 1, 0, 1, 0,

%e 1, 0, 1, 1,

%e 1, 1, 0, 0,

%e 1, 1, 0, 1,

%e 1, 1, 1, 0,

%e 1, 1, 1, 1,

%e 1, 0, 0, 0, 0,

%e 1, 0, 0, 0, 1,

%e ...

%e 4 = 1,0,0 begins at the 6th bit, so a(4)=6; 5 = 1,0,1 begins at the 9th bit, so a(5)=9.

%Y Cf. A030190, A030302, A296364.

%Y This is A083652 prefixed by an initial 0.

%Y A296354 is closely related.

%Y Essentially partial sums of A070939.

%K nonn,base

%O 0,3

%A _N. J. A. Sloane_, Dec 16 2017

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)