id:A153383 - OEIS Search Results

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Numbers n such that 12n+1 is not prime

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2

2, 4, 7, 10, 11, 12, 14, 17, 18, 21, 22, 24, 25, 27, 30, 32, 37, 39, 40, 41, 42, 43, 44, 46, 47, 49, 52, 53, 54, 57, 58, 60, 62, 65, 66, 67, 68, 70, 72, 74, 75, 76, 77, 79, 80, 81, 82, 87, 88, 90, 92, 95, 97, 98, 99, 102, 105, 106, 107, 109, 111, 112, 113, 114, 116, 117 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Complement of A110801 (12*n+1 is prime). [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 02 2009]`
	FORMULA	`Let p=prime, n=(p^2-1)/12 mod (p);`
	PROGRAM	`(MAGMA) [ n: n in [1..120] \| not IsPrime(12*n+1) ]; [From Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 02 2009]`
	CROSSREFS	`Cf. A110801` `Sequence in context: A034702 A167206 A053223 this_sequence A164903 A057843 A047539` `Adjacent sequences: A153380 A153381 A153382 this_sequence A153384 A153385 A153386`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 25 2008`
	EXTENSIONS	`More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Jan 02 2009`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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