A035103 - OEIS

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A035103

Number of 0's in binary representation of n-th prime.

1, 0, 1, 0, 1, 1, 3, 2, 1, 1, 0, 3, 3, 2, 1, 2, 1, 1, 4, 3, 4, 2, 3, 3, 4, 3, 2, 2, 2, 3, 0, 5, 5, 4, 4, 3, 3, 4, 3, 3, 3, 3, 1, 5, 4, 3, 3, 1, 3, 3, 3, 1, 3, 1, 7, 5, 5, 4, 5, 5, 4, 5, 4, 3, 4, 3, 4, 5, 3, 3, 5, 3, 2, 3, 2, 1, 5, 4, 5, 4, 4, 4, 2, 4, 2, 2, 5, 4, 3, 2, 3, 1, 2, 2, 2, 1, 1, 7, 6, 5, 6, 5, 5, 5, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,7`
	FORMULA	`a(n) = A035100(n) - A014499(n). [From M. F. Hasler (www.univ-ag.fr/~mhasler), Nov 21 2009]`
	MATHEMATICA	`Table[ Count[ IntegerDigits[ Prime[ n ], 2 ], 0 ], {n, 120} ]`
	PROG	`(PARI) A035103(n) = #(n=binary(prime(n)))-norml2(n) [From M. F. Hasler (www.univ-ag.fr/~mhasler), Nov 21 2009]`
	CROSSREFS	`Cf. A014499, A035100.` `Sequence in context: A202551 A129267 A199324 * A155033 A107889 A138384` `Adjacent sequences: A035100 A035101 A035102 * A035104 A035105 A035106`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`More terms from Erich Friedman (erich.friedman(AT)stetson.edu)`

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Last modified February 16 17:48 EST 2012. Contains 205939 sequences.