id:A098029 - OEIS Search Results

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Primes p such that p = (prime(n)+ prime(n+3))/2 is prime.

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7, 23, 37, 47, 67, 73, 233, 277, 353, 479, 613, 631, 647, 809, 1097, 1283, 1297, 1433, 1453, 1471, 1493, 1607, 1613, 1663, 1709, 1721, 1783, 1867, 1889, 1901, 1931, 1993, 2099, 2137, 2161, 2377, 2383, 2411, 2521, 2621, 2683, 2693, 2713, 2797, 2879, 3049 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`prime(2)=3,prime(2+3)=11. (3+11)/2 = 7`
	PROGRAM	`(PARI) f(n, m) = for(x=1, n, y=prime(x)+prime(x+m); if(y%2==0 & isprime(y\2), print1(y\2", ")))`
	CROSSREFS	`Adjacent sequences: A098026 A098027 A098028 this_sequence A098030 A098031 A098032` `Sequence in context: A014663 A141175 A007522 this_sequence A098039 A132237 A143030`
	KEYWORD	`easy,nonn`
	AUTHOR	`Cino Hilliard (hillcino368(AT)gmail.com), Sep 10 2004`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

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