id:A109831 - OEIS Search Results

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Greatest number of primes < prime(n) forming an arithmetic progression such that also prime(n) is a term.

+0
3

1, 1, 2, 2, 1, 2, 2, 3, 4, 2, 1, 3, 3, 2, 4, 3, 2, 2, 2, 2, 3, 3, 2, 3, 3, 3, 3, 2, 3, 4, 4, 2, 3, 3, 3, 5, 3, 3, 4, 2, 3, 3, 3, 4, 3, 2, 3, 4, 3, 3, 3, 3, 4, 5, 3, 3, 4, 2, 3, 4, 4, 3, 5, 3, 3, 3, 2, 3, 3, 5, 3, 3, 4, 2, 3, 4, 4, 3, 3, 3, 4, 3, 3, 3, 4, 4, 3, 3, 5, 3, 4, 3, 3, 2, 3, 5, 4, 3, 3, 3, 2, 3 (list; graph; listen)

	OFFSET	`2,3`
	COMMENT	`a(n) = (A000040(n) - A109833(n)) / A109832(n).`
	LINKS	`Eric Weisstein's World of Mathematics, Prime Arithmetic Progression` `Index entries for sequences related to primes in arithmetic progressions`
	CROSSREFS	`Adjacent sequences: A109828 A109829 A109830 this_sequence A109832 A109833 A109834` `Sequence in context: A014420 A029289 A029328 this_sequence A097266 A112175 A112206`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 04 2005`

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Last modified October 13 20:18 EDT 2008. Contains 145016 sequences.

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