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A156009 Primes p such that 64*p + 189 is also prime. 4
2, 5, 13, 17, 37, 53, 61, 71, 73, 83, 97, 101, 103, 127, 131, 173, 191, 193, 211, 223, 227, 233, 251, 263, 283, 317, 337, 347, 367, 373, 431, 433, 443, 457, 487, 503, 521, 557, 577, 601, 641, 643, 647, 653, 673, 677, 701, 743, 797, 821, 823, 827, 883, 887, 907 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MAPLE
a := proc (n) if isprime(64*ithprime(n)+189) = true then ithprime(n) else end if end proc: seq(a(n), n = 1 .. 180); # Emeric Deutsch, Mar 01 2009
MATHEMATICA
Select[Prime[Range[1000]], PrimeQ[(64*# + 189)]&] (* Vincenzo Librandi, Oct 30 2012 *)
PROG
(Magma) [p: p in PrimesUpTo(1000)| IsPrime(64*p + 189)]; // Vincenzo Librandi, Oct 30 2012
CROSSREFS
Sequence in context: A079936 A363750 A102854 * A215275 A164620 A333876
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Feb 01 2009
EXTENSIONS
More terms from Emeric Deutsch, Mar 01 2009
STATUS
approved

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Last modified May 29 00:29 EDT 2024. Contains 372921 sequences. (Running on oeis4.)