id:A153184 - OEIS Search Results

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Numbers n such that 3n-2 is not prime

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4

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	OFFSET	`1,1`
	COMMENT	`Of course n is even`
	FORMULA	`Let p = prime number n=[(p^2+2)/3] mod. (2p)`
	MATHEMATICA	`lst={}; Do[If[ !PrimeQ[3*n-2], AppendTo[lst, n]], {n, 5!}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 22 2008]`
	CROSSREFS	`Cf. A153183` `Cf. A153185 [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Dec 22 2008]` `Sequence in context: A085492 A065090 A003254 this_sequence A047412 A110262 A118672` `Adjacent sequences: A153181 A153182 A153183 this_sequence A153185 A153186 A153187`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 20 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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