id:A098806 - OEIS Search Results

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Smallest prime p such that 2n-p and 2n+p are both prime.

+0
3

5, 7, 11, 11, 13, 17, 17, 23, 23, 29, 31, 37, 37, 43, 41, 43, 47, 53, 53, 59, 67, 67, 71, 71, 79, 89, 83, 89, 101, 97, 101, 101, 109, 107, 131, 113, 127, 131, 127, 131, 137, 137, 179, 149, 157, 157, 193, 191, 167, 179, 179, 181, 193, 193, 191, 193, 197, 211, 227, 211 (list; graph; listen)

	OFFSET	`2,1`
	PROGRAM	`(PARI) f(n) = for(p=1, n, for(x=1, n, y=x-p; z=x+p; if(isprime(y)&isprime(z)&isprime(x), print1(x", "); break)))`
	CROSSREFS	`Cf. A098807.` `Sequence in context: A115044 A020484 A107257 this_sequence A122278 A124109 A095798` `Adjacent sequences: A098803 A098804 A098805 this_sequence A098807 A098808 A098809`
	KEYWORD	`easy,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Oct 06 2004`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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