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A138655 Primes p such that 36*p-1 and 36*p+1 are twin primes. 1
2, 3, 5, 23, 107, 137, 157, 163, 193, 233, 457, 577, 647, 677, 857, 1013, 1123, 1223, 1237, 1783, 1867, 1873, 2243, 2417, 2467, 2683, 2957, 3407, 3413, 3517, 3797, 4373, 4447, 4603, 4903, 5413, 5437, 5813, 6053, 6073, 6323, 6577, 6823, 6863, 7207, 7793 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

EXAMPLE

36*2-1=71, 36*2+1=73; 36*3-1=107, 36*p+1=109;...

MAPLE

Res:= NULL: count:= 0:

p:= 1:

while count < 100 do

  p:= nextprime(p);

  if isprime(36*p-1) and isprime(36*p+1) then

    count:= count+1; Res:= Res, p;

  fi

od:

Res; # Robert Israel, Jan 14 2019

MATHEMATICA

a=36; Select[Prime[Range[10^3]], PrimeQ[a*#-1]&&PrimeQ[a*#+1]&]

CROSSREFS

Sequence in context: A182976 A042363 A208220 * A053708 A137070 A084730

Adjacent sequences:  A138652 A138653 A138654 * A138656 A138657 A138658

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, May 15 2008

STATUS

approved

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Last modified September 17 11:15 EDT 2019. Contains 327129 sequences. (Running on oeis4.)