id:A153381 - OEIS Search Results

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Numbers n such that 11n+5 is not prime

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	OFFSET	`1,2`
	COMMENT	`Of course n is odd`
	FORMULA	`Let p=prime; n=(p^2-5)/11 mod (p); n=(p^2+4p-5)/11 mod (p); n=(p^2+6p-5)/11 mod (p); n=(p^2+16p-5)/11 mod (p); n=(p^2+18p-5)/11 mod (p);`
	CROSSREFS	`Cf. A108233` `Sequence in context: A049093 A098901 A098767 this_sequence A091010 A116358 A060683` `Adjacent sequences: A153378 A153379 A153380 this_sequence A153382 A153383 A153384`
	KEYWORD	`nonn`
	AUTHOR	`Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 25 2008`

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

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