id:A145477 - OEIS Search Results

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Primes p such that (23+p)/2 is prime.

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3, 11, 23, 59, 71, 83, 179, 191, 239, 251, 311, 359, 431, 443, 479, 491, 503, 563, 599, 683, 743, 839, 863, 911, 983, 1019, 1091, 1103, 1151, 1163, 1259, 1283, 1499, 1523, 1571, 1619, 1871, 1931, 2003, 2039, 2099, 2339, 2351, 2411, 2423, 2531, 2543, 2579 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`All these primes are congruent to 3 mod 4 and (with exception first one) to 11 mod 12`
	MATHEMATICA	`aa = {}; k = 23; Do[If[PrimeQ[(k + Prime[n])/2], AppendTo[aa, Prime[n]]], {n, 1, 500}]; aa`
	CROSSREFS	`Cf. A092109, A145471-A145480.` `Sequence in context: A107138 A145473 A128928 this_sequence A098828 A165635 A032026` `Adjacent sequences: A145474 A145475 A145476 this_sequence A145478 A145479 A145480`
	KEYWORD	`nonn`
	AUTHOR	`Artur Jasinski (grafix(AT)csl.pl), Oct 11 2008`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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