id:A115206 - OEIS Search Results

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Least number d such that p(n) -/+ 2d form a prime pair; p(n) being the n-th prime.

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1, 2, 3, 3, 3, 6, 3, 6, 6, 3, 6, 12, 3, 3, 6, 9, 3, 6, 3, 9, 12, 9, 15, 6, 3, 3, 15, 12, 12, 9, 15, 6, 9, 6, 3, 18, 15, 3, 6, 9, 21, 15, 15, 21, 6, 30, 15, 24, 3, 6, 15, 6, 3, 3, 6, 21, 3, 6, 27, 12, 12, 21, 18, 18, 9, 15, 18, 9, 3, 21, 15, 3, 15, 18, 15, 12, 9, 6, 15, 6, 6, 12, 9, 12, 9, 42, 9 (list; graph; listen)

	OFFSET	`3,2`
	FORMULA	`a(n)=A078611(n)/2.`
	MATHEMATICA	`f[n_] := Block[{k = 1, p = Prime@n}, While[ !PrimeQ[p - 2k] \|\| !PrimeQ[p + 2k], k++ ]; k]; Table[f[n], {n, 3, 90}] - Robert G. Wilson v (rgwv(at)rgwv.com), Mar 14 2006`
	CROSSREFS	`Sequence in context: A133700 A087688 A126854 this_sequence A093653 A049982 A070167` `Adjacent sequences: A115203 A115204 A115205 this_sequence A115207 A115208 A115209`
	KEYWORD	`nonn`
	AUTHOR	`Lekraj Beedassy (blekraj(AT)yahoo.com), Mar 04 2006`
	EXTENSIONS	`Corrected by N. J. A. Sloane (njas(AT)research.att.com), Mar 05 2006` `More terms from Robert G. Wilson v (rgwv(at)rgwv.com), Mar 14 2006`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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