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A033868 Numbers n such that 7*n-11 is prime. 10
2, 4, 6, 10, 12, 16, 24, 30, 34, 36, 40, 42, 46, 52, 54, 60, 70, 76, 82, 84, 90, 94, 96, 112, 114, 120, 124, 136, 142, 144, 150, 160, 162, 166, 172, 180, 184, 186, 190, 196, 210, 214, 222, 226, 232, 234, 240, 244, 252, 262, 270, 274, 280, 300, 306, 322, 336, 342 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988

Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997

FORMULA

a(n) = A024903(n)+1 = A089033(n)+2 = A090614(n)*2+2.

MATHEMATICA

Select[Range[500], PrimeQ[7#-11]&]  (* From Harvey P. Dale, Mar 31 2011 *)

CROSSREFS

A045437 gives primes, A090613 gives prime index.

Cf. A024903, A045437, A089033, A090613, A090614.

Sequence in context: A005942 A024907 A033098 * A045954 A072542 A167856

Adjacent sequences:  A033865 A033866 A033867 * A033869 A033870 A033871

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Dec 01 2003

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 23 2003

Offset corrected by Arkadiusz Wesolowski, Aug 09 2011

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Last modified February 14 16:19 EST 2012. Contains 205635 sequences.