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A153083 Numbers such that 2*n+11 is not prime 2
2, 5, 7, 8, 11, 12, 14, 17, 19, 20, 22, 23, 26, 27, 29, 32, 33, 35, 37, 38, 40, 41, 42, 44, 47, 50, 52, 53, 54, 55, 56, 57, 59, 61, 62, 65, 66, 67, 68, 71, 72, 74, 75, 77, 79, 80, 82, 83, 86, 87, 88, 89, 92, 95, 96, 97, 98, 99 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

One less than the associated entry in A155723.

FORMULA

Let p = prime n = (p^2-11)/2 mod,(p)

MATHEMATICA

Select[Range[100], !PrimeQ[2#+11]&] (* From Harvey P. Dale, Jul 18 2011 *)

CROSSREFS

Cf. A101448, A155546

Sequence in context: A005124 A160530 A050941 * A140592 A153086 A032784

Adjacent sequences:  A153080 A153081 A153082 * A153084 A153085 A153086

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 18 2008

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Last modified February 15 09:35 EST 2012. Contains 205753 sequences.