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A023236 Numbers n such that n and 9n + 10 both prime. 1
3, 7, 11, 13, 17, 19, 29, 41, 43, 47, 53, 59, 67, 83, 89, 97, 101, 103, 109, 127, 157, 173, 179, 193, 197, 199, 223, 227, 239, 241, 251, 263, 277, 281, 283, 293, 353, 367, 383, 389, 397, 409, 431, 433, 449, 461, 463, 509, 547, 557, 563, 593, 601, 613, 617, 619, 631, 641 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Select[Prime[Range[900]], PrimeQ[9 # + 10] &] (* Vincenzo Librandi, May 21 2014 *)

PROG

(MAGMA) [p: p in PrimesUpTo(700)| IsPrime(9*p+10)]; // Vincenzo Librandi, May 21 2014

CROSSREFS

Sequence in context: A020598 A310193 A226014 * A038920 A091633 A166559

Adjacent sequences:  A023233 A023234 A023235 * A023237 A023238 A023239

KEYWORD

nonn,easy

AUTHOR

David W. Wilson

STATUS

approved

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Last modified September 15 16:12 EDT 2019. Contains 327078 sequences. (Running on oeis4.)