id:A165681 - OEIS Search Results

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Primes p such that 3*p*(p-1)+1 is not prime.

+0
3

13, 17, 19, 23, 37, 41, 47, 61, 71, 73, 79, 83, 97, 101, 103, 107, 113, 127, 131, 139, 149, 151, 163, 167, 179, 181, 191, 193, 199, 211, 223, 227, 229, 233, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 317, 331, 337, 349, 359, 367, 373, 379, 383, 397, 401 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`A000040 \ A165682.`
	CROSSREFS	`Cf. A165682, A165683` `Sequence in context: A049482 A099651 A156666 this_sequence A167802 A105878 A054476` `Adjacent sequences: A165678 A165679 A165680 this_sequence A165682 A165683 A165684`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Sep 24 2009`
	EXTENSIONS	`2 and 3 removed by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 26 2009`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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