id:A132398 - OEIS Search Results

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Numbers n such that 11*n^2 + 1 is prime.

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6, 24, 30, 54, 66, 84, 90, 96, 126, 144, 150, 186, 210, 234, 246, 276, 300, 324, 330, 360, 420, 426, 444, 450, 474, 480, 486, 516, 606, 624, 636, 684, 720, 750, 786, 804, 816, 864, 876, 900, 906, 924, 966, 996, 1014, 1020, 1056, 1074, 1104, 1110, 1116, 1194 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`All terms are multiples of 6.`
	EXAMPLE	`If n=6 then 11n^2 + 1 = 397 (prime).` `If n=144 then 11n^2 + 1 = 228097 (prime).`
	MATHEMATICA	`Select[Range[1300], PrimeQ[11*#^2 + 1] &] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Nov 13 2007`
	CROSSREFS	`Cf. A111051, A132190.` `Adjacent sequences: A132395 A132396 A132397 this_sequence A132399 A132400 A132401` `Sequence in context: A009112 A057101 A057228 this_sequence A073120 A128459 A065743`
	KEYWORD	`nonn`
	AUTHOR	`Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Nov 12 2007`
	EXTENSIONS	`More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Nov 13 2007`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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