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A089255 Odd numbers n such that 2*n-5 is a prime. 0
5, 9, 11, 17, 21, 23, 29, 33, 39, 47, 51, 53, 57, 59, 71, 77, 81, 89, 93, 99, 101, 117, 119, 123, 131, 137, 141, 143, 149, 159, 161, 171, 177, 179, 189, 197, 201, 203, 207, 213, 219, 227, 231, 233, 257, 263, 273, 281, 287, 291, 299, 303, 309, 311, 323, 329, 333 (list; graph; refs; listen; history; text; 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

LINKS

Table of n, a(n) for n=1..57.

CROSSREFS

Cf. A089253, A002144.

Sequence in context: A023484 A102173 A171763 * A314601 A314602 A314603

Adjacent sequences:  A089252 A089253 A089254 * A089256 A089257 A089258

KEYWORD

easy,nonn

AUTHOR

Giovanni Teofilatto, Dec 12 2003

EXTENSIONS

Corrected sequence and extended by Vincenzo Librandi, Mar 30 2010

Offset corrected by Arkadiusz Wesolowski, Aug 09 2011

STATUS

approved

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Last modified October 18 05:07 EDT 2019. Contains 328145 sequences. (Running on oeis4.)