A033300 - OEIS

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A033300

Smallest safe prime ((p-1)/2 is also prime) > n-th prime.

5, 5, 7, 11, 23, 23, 23, 23, 47, 47, 47, 47, 47, 47, 59, 59, 83, 83, 83, 83, 83, 83, 107, 107, 107, 107, 107, 167, 167, 167, 167, 167, 167, 167, 167, 167, 167, 167, 179, 179, 227, 227, 227, 227, 227, 227, 227, 227 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	LINKS	`Harvey P. Dale, Table of n, a(n) for n = 0..1000`
	MAPLE	`with(numtheory); safeprime(ithprime(i));`
	MATHEMATICA	`ssp[n_]:=Module[{p=NextPrime[Prime[n]]}, While[!PrimeQ[(p-1)/2], p=NextPrime[p]]; p]; Array[ssp, 50] (* Harvey P. Dale, Dec 22 2013 *)`
	CROSSREFS	`Sequence in context: A300916 A134125 A097996 * A134130 A078551 A247877` `Adjacent sequences: A033297 A033298 A033299 * A033301 A033302 A033303`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

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Last modified April 11 16:42 EDT 2021. Contains 342888 sequences. (Running on oeis4.)