id:A123556 - OEIS Search Results

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Number of elements in longest arithmetic progression of primes with difference n.

+0
3

2, 3, 2, 3, 2, 5, 1, 3, 2, 3, 2, 5, 1, 3, 2, 2, 2, 4, 1, 3, 2, 2, 1, 4, 1, 2, 2, 3, 2, 6, 1, 2, 1, 3, 2, 4, 1, 3, 2, 3, 2, 5, 1, 2, 2, 2, 1, 5, 1, 3, 2, 2, 1, 4, 1, 2, 2, 2, 2, 6, 1, 2, 1, 3, 2, 4, 1, 3, 2, 2, 2, 4, 1, 2, 1, 2, 2, 4, 1, 3, 2, 2, 1, 4, 1, 2, 2, 2, 1, 6, 1, 2, 1, 3, 2, 5, 1, 3, 2, 2, 2, 4, 1, 3, 2 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Length of n-th row of A124064.`
	FORMULA	`Assume the k-tuples conjecture. Let p = A053669(n). If the arithmetic progression of p elements starting at p with difference n consists of primes, then a(n) = p, otherwise a(n) = p-1.`
	CROSSREFS	`Sequence in context: A096737 A029208 A087242 this_sequence A053669 A112047 A112048` `Adjacent sequences: A123553 A123554 A123555 this_sequence A123557 A123558 A123559`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson, Nov 15 2006, revised Nov 25 2006`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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