A004772 - OEIS

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A004772

Numbers that are not congruent to 1 mod 4.

0, 2, 3, 4, 6, 7, 8, 10, 11, 12, 14, 15, 16, 18, 19, 20, 22, 23, 24, 26, 27, 28, 30, 31, 32, 34, 35, 36, 38, 39, 40, 42, 43, 44, 46, 47, 48, 50, 51, 52, 54, 55, 56, 58, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, 72, 74, 75, 76, 78, 79, 80, 82, 83, 84, 86, 87, 88, 90 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (1,0,1,-1).`
	FORMULA	`Numbers n such that binary expansion does not end 01.` `G.f. x^2(2+x+x^2) / ( (1+x+x^2)(x-1)^2 ). - R. J. Mathar, Oct 08 2011` `a(n) = floor((4*n-2)/3). [From Gary Detlefs, Jan 02 2012]`
	CROSSREFS	`Sequence in context: A187572 A184478 A188188 * A029597 A188262 A099619` `Adjacent sequences: A004769 A004770 A004771 * A004773 A004774 A004775`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`Corrected by Michael Somos, Jun 08 2000`

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Last modified February 14 14:47 EST 2012. Contains 205623 sequences.