A056977 - OEIS

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A056977

Number of blocks of {0, 1, 1} in binary expansion of n.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,91`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	FORMULA	`a(2n) = a(n), a(2n+1) = a(n) + [n>1 and n congruent to 1 mod 4]. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Aug 22 2003`
	CROSSREFS	`Cf. A014082, A056974, A056975, A056976, A056977, A056978, A056979, A056980.` `Sequence in context: A105794 A160380 A122433 * A085425 A167230 A093658` `Adjacent sequences: A056974 A056975 A056976 * A056978 A056979 A056980`
	KEYWORD	`nonn`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.