id:A165635 - OEIS Search Results

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Primes of the form (p^2-3)/2 where p is also prime.

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3, 11, 23, 59, 83, 179, 263, 419, 479, 683, 839, 1103, 2243, 2663, 3119, 4703, 5099, 5303, 5939, 11399, 12323, 19403, 22259, 25763, 27143, 28559, 33023, 34583, 42923, 47123, 54779, 56783, 60899, 62303, 64439, 67343, 75659, 78803, 83639, 98123 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`The sequence could be generated by searching for squared primes p^2 in A153238.`
	FORMULA	`a(n) = (A110589(n)^2-3)/2 .`
	EXAMPLE	`The prime 3=(3^2-3)/2 is generated by p=3. The prime 11=(5^2-3)/2 is generated by p=5. The prime 23 by p=7.`
	CROSSREFS	`Cf. A110589, A153238` `Sequence in context: A128928 A145477 A098828 this_sequence A032026 A158034 A002515` `Adjacent sequences: A165632 A165633 A165634 this_sequence A165636 A165637 A165638`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Sep 23 2009`
	EXTENSIONS	`More terms from Max Alekseyev (maxale(AT)gmail.com), Sep 25 2009` `Comment clarified by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 07 2009`

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.

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