id:A145174 - OEIS Search Results

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Least a(n) such that p(n)#*(p(n)#-a(n))-1 and p(n)#*(p(n)#-a(n))+1 are twin primes with p(i)#=i-th primorial

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0, 1, 3, 1, 5, 4, 44, 13, 31, 173, 25, 19, 75, 99, 47, 77, 166, 468, 43, 1, 344, 7, 44, 398, 434, 901, 246, 246, 91, 755, 1066, 839, 1605, 560, 460, 1649, 426, 1203, 732, 1055, 130, 1821, 1645, 360, 4779, 2414, 272, 668, 2410, 3957, 2514, 685, 3484, 3139, 5680 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`Pierre CAMI, Table of n, a(n) for n = 1..200`
	EXAMPLE	`23(2*3-1)-1=29 prime as 31 so a(2)=1`
	CROSSREFS	`Cf. A144946, A144947, A145173` `Sequence in context: A007085 A094648 A096975 this_sequence A135184 A131304 A131302` `Adjacent sequences: A145171 A145172 A145173 this_sequence A145175 A145176 A145177`
	KEYWORD	`nonn`
	AUTHOR	`Pierre CAMI (pierrecami(AT)tele2.fr), Oct 03 2008`
	EXTENSIONS	`Corrected and extended by Ray Chandler, Jan 12 2009`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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