id:A153464 - OEIS Search Results

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Numbers n such that 4n+9 is not prime

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3, 4, 6, 9, 10, 12, 14, 15, 17, 18, 19, 21, 24, 27, 28, 29, 30, 31, 33, 34, 36, 38, 39, 40, 42, 44, 45, 48, 49, 50, 51, 52, 53, 54, 57, 59, 60, 61, 63, 64, 66, 69, 70, 72, 73, 74, 75, 78, 79, 80, 81, 83, 84, 87, 88, 89, 90, 92, 93, 94, 96, 99, 101, 102, 104, 105, 107, 108, 109 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`Let p = prime number, n= (p^2-9)/4 mod (p)`
	CROSSREFS	`A111199` `Sequence in context: A080336 A082692 A032706 this_sequence A047231 A050131 A089986` `Adjacent sequences: A153461 A153462 A153463 this_sequence A153465 A153466 A153467`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 27 2008`
	EXTENSIONS	`79 added by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 23 2009`

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

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