id:A107414 - OEIS Search Results

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Least number k such that k*p(j)*p(j+1) - 1 and k*p(j)*p(j+1) + 1 are twin primes with p(j) and p(j+1) odd twin primes.

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2, 12, 6, 60, 78, 336, 18, 216, 96, 144, 120, 18, 510, 516, 336, 66, 60, 420, 144, 570, 570, 270, 120, 156, 54, 102, 102, 540, 504, 48, 582, 264, 210, 156, 156, 78, 30, 282, 354, 240, 156, 372, 24, 102, 150, 180, 306, 690, 120, 210, 204, 252, 144, 156, 240, 156 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`235=30 29 and 31 twin primes, 3 and 5 fist odd twin primes so k(1)=2` `1257=420 419 and 421 twin primes, 5 and 7 second odd twin primes so k(2)=12` `61113=858 857 and 859 twin primes, 11 and 13 third odd twin primes k(3)=6`
	CROSSREFS	`Sequence in context: A079080 A035877 A086494 this_sequence A133437 A014964 A001898` `Adjacent sequences: A107411 A107412 A107413 this_sequence A107415 A107416 A107417`
	KEYWORD	`easy,nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), May 26 2005`

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Last modified July 23 17:35 EDT 2008. Contains 142285 sequences.

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