id:A072577 - OEIS Search Results

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Numbers n such that n and the n-th prime have the same number of 0's in their binary representation.

+0
5

5, 6, 20, 22, 24, 28, 31, 32, 34, 37, 41, 42, 49, 50, 67, 68, 81, 82, 84, 88, 89, 93, 94, 138, 139, 140, 141, 142, 143, 147, 151, 157, 165, 192, 194, 198, 200, 202, 206, 207, 232, 236, 241, 262, 265, 270, 271, 284, 285, 295, 301, 328, 329, 332, 333, 337 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A023416(a(n))=A023416(A072580(n))=A035103(n);` `a(n)=A049084(A072580(n)).`
	EXAMPLE	`In binary representation 20 and A000040(20)=71 have three 0's: 13='10100' and 71='1000111', therefore 20 is a term.`
	CROSSREFS	`Cf. A071600, A072578, A072579.` `Sequence in context: A056509 A129722 A133608 this_sequence A057520 A060423 A037951` `Adjacent sequences: A072574 A072575 A072576 this_sequence A072578 A072579 A072580`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jun 23 2002`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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