id:A063124 - OEIS Search Results

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a(n) = # { i prime | prime(n) <= i < prime(n)*2 } (prime(n) = A000040, the prime enumeration).

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2, 2, 2, 3, 4, 4, 5, 5, 6, 7, 8, 10, 10, 10, 10, 12, 14, 13, 14, 15, 14, 16, 16, 17, 20, 21, 20, 20, 19, 19, 24, 24, 26, 26, 28, 27, 29, 29, 29, 29, 31, 31, 33, 33, 33, 33, 36, 39, 39, 39, 40, 40, 40, 42, 43, 44, 43, 43, 43, 43, 43, 45, 50, 51, 50, 50, 55, 55, 57, 56, 56, 56, 58 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`a(n) = A035250(prime(n))`
	EXAMPLE	`a(10) = 7 as there are 7 primes between prime(10) = 29 and 58 = 29*2: 29, 31, 37, 41, 43, 47, 53.`
	CROSSREFS	`A035250, A000040.` `Sequence in context: A090619 A029113 A105098 this_sequence A070547 A094838 A025768` `Adjacent sequences: A063121 A063122 A063123 this_sequence A063125 A063126 A063127`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 08 2001`

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Last modified December 4 14:15 EST 2008. Contains 151279 sequences.

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