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A087915 Even numbers n such that 2*n+3 is a prime. 5
0, 2, 4, 8, 10, 14, 20, 22, 28, 32, 34, 38, 40, 50, 52, 62, 64, 68, 74, 80, 82, 88, 94, 98, 104, 110, 112, 118, 124, 130, 134, 140, 152, 154, 164, 172, 178, 182, 188, 190, 208, 214, 218, 220, 230, 232, 238, 242, 244, 248, 250, 260, 272, 280, 284, 292, 298, 302 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

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

LINKS

Table of n, a(n) for n=1..58.

MATHEMATICA

Select[Range[0, 350, 2], PrimeQ[2#+3]&] (* Harvey P. Dale, Jan 12 2012 *)

CROSSREFS

A subset of A067076.

Cf. A002145.

a(n)=A089193(n)-5

Sequence in context: A024895 A250310 A288447 * A088967 A200566 A091992

Adjacent sequences:  A087912 A087913 A087914 * A087916 A087917 A087918

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Oct 18 2003

EXTENSIONS

More terms from Ray Chandler, Oct 19 2003

Offset corrected by Arkadiusz Wesolowski, Aug 09 2011

STATUS

approved

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Last modified May 13 15:38 EDT 2021. Contains 343860 sequences. (Running on oeis4.)