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A037800 Number of occurrences of 01 in the binary expansion of n. +0
5
0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 0, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 2, 2, 3, 2, 2, 1, 2, 2, 2, 1, 2, 1, 1, 0, 1, 1, 1, 1, 2, 1 (list; graph; listen)
OFFSET

0,22

COMMENT

Number of i such that d(i)>d(i-1), where Sum{d(i)*2^i: i=0,1,...,m} is base 2 representation of n.

LINKS

R. Stephan, Some divide-and-conquer sequences ...

R. Stephan, Table of generating functions

Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.

Index entries for sequences related to binary expansion of n

FORMULA

a(2n) = a(n), a(2n+1) = a(n) + [n is even]. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Aug 21 2003

G.f.: 1/(1-x) * sum(k>=0, t^5/(1+t)/(1+t^2), t=x^2^k). - Ralf Stephan (ralf(AT)ark.in-berlin.de), Sep 10 2003

a(n) = A069010(n) - 1, n>0. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Sep 10 2003

CROSSREFS

Cf. A014081, A014082, A033264, A037800, A056974, A056975, A056976, A056977, A056978, A056979, A056980.

Sequence in context: A076453 A005590 A142598 this_sequence A144411 A138253 A085737

Adjacent sequences: A037797 A037798 A037799 this_sequence A037801 A037802 A037803

KEYWORD

nonn,base,easy

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.


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