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A153384 Numbers n such that 24*n+1 is not prime. 1
0, 1, 2, 5, 6, 7, 9, 11, 12, 15, 16, 20, 21, 22, 23, 26, 27, 29, 30, 31, 33, 34, 35, 36, 37, 38, 40, 41, 44, 45, 46, 49, 51, 53, 56, 57, 58, 59, 60, 61, 63, 64, 65, 66, 68, 70, 71, 72, 76, 77, 79, 80, 81, 82, 85, 86, 91, 92, 93, 94, 96, 97, 98, 100, 101, 102 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

FORMULA

Let p = prime number, n=(p^2-1)/24 mod (p)

CROSSREFS

Cf. A111174.

Sequence in context: A161539 A177859 A047580 * A102657 A202115 A047324

Adjacent sequences:  A153381 A153382 A153383 * A153385 A153386 A153387

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 25 2008

EXTENSIONS

0 added by Arkadiusz Wesolowski, Aug 03 2011

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.