id:A103579 - OEIS Search Results

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Sophie Germain primes that are not Lucasian primes.

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2, 5, 29, 41, 53, 89, 113, 173, 233, 281, 293, 509, 593, 641, 653, 761, 809, 953, 1013, 1049, 1229, 1289, 1409, 1481 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Sophie Germain primes A005384 are those primes p such that 2p+1 is also prime. Lucasian primes A002515 are those primes p such that p == 3 (mod 4) with 2p+1 prime.`
	FORMULA	`Primes p such that 2p+1 is prime and not p == 3 (mod 4). {A005384} - {A002515}. 2 Union {primes p such that 2p+1 is prime and p == 1 (mod 4). 2 Union {A002145 Intersection A005384}.`
	CROSSREFS	`Cf. A002145, A002515, A005384.` `Sequence in context: A049050 A098858 A134449 this_sequence A061351 A126107 A083472` `Adjacent sequences: A103576 A103577 A103578 this_sequence A103580 A103581 A103582`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost2(AT)yahoo.com), Mar 23 2005`

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Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.