A151774 - OEIS

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A151774

Characteristic function of numbers with binary weight 2 (A018900).

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

	OFFSET	`0,1`
	COMMENTS	`a(A018900(n)) = 1; a(A161989(n)) = 0. [From Reinhard Zumkeller, Jun 24 2009]`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 0..10000 [From Reinhard Zumkeller, Jun 24 2009]` `Index entries for characteristic functions [From Reinhard Zumkeller, Jun 24 2009]`
	FORMULA	`Let Theta = Sum_{k >= 0} x^(2^k). G.f. is (x + Theta^2 - Theta)/2 (cf. A151758).`
	CROSSREFS	`Cf, A000120, A018900, A151758.` `Sequence in context: A099618 A106002 A066247 * A095792 A169675 A093385` `Adjacent sequences: A151771 A151772 A151773 * A151775 A151776 A151777`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane, Jun 23 2009`
	STATUS	`approved`

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Last modified May 24 14:59 EDT 2013. Contains 225624 sequences.