id:A090680 - OEIS Search Results

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Number of primes p such that n < p < n+A033677(n).

+0
1

1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 1, 3, 2, 2, 2, 4, 2, 4, 1, 1, 3, 5, 1, 1, 3, 2, 2, 6, 1, 7, 1, 3, 4, 2, 2, 9, 4, 3, 3, 9, 2, 9, 2, 2, 5, 9, 1, 1, 2, 4, 3, 11, 2, 2, 2, 5, 7, 13, 2, 12, 6, 2, 2, 3, 1, 13, 4, 5, 3, 14, 2, 13, 8, 3, 3, 2, 3, 15, 2, 2, 8, 15, 1, 3, 8, 7, 2, 16, 1, 3, 6, 6, 10, 6, 4, 19, 4, 4, 4, 20, 4, 19, 3, 3, 10, 19, 2, 18, 1, 5, 1, 18, 2, 3, 4, 1, 10, 2, 2, 2, 12, 8, 6, 5, 4, 23, 3, 8, 3, 23, 2, 4, 14 (list; graph; listen)

	OFFSET	`2,6`
	COMMENT	`Conjecture: no a(n) is zero. Example: n=15: A033677(15) = 5; 2 primes between 15 and 15+5=20 (17 and 19), so a(15) = 2.`
	CROSSREFS	`Cf. A033677.` `Sequence in context: A083796 A037039 A153452 this_sequence A029254 A063740 A072782` `Adjacent sequences: A090677 A090678 A090679 this_sequence A090681 A090682 A090683`
	KEYWORD	`easy,nonn`
	AUTHOR	`DELEHAM Philippe (kolotoko(AT)wanadoo.fr), Dec 18 2003`
	EXTENSIONS	`More terms from Benoit Cloitre, Dec 23 2003`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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