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A051645
Primes p such that 30*p+1 is also prime.
2
2, 5, 7, 11, 19, 23, 41, 43, 61, 67, 71, 79, 89, 109, 113, 131, 137, 167, 181, 193, 223, 229, 233, 277, 281, 313, 317, 331, 337, 359, 383, 439, 443, 457, 461, 467, 491, 503, 509, 541, 547, 593, 599, 607, 641, 691, 701, 733, 739, 743, 751, 769, 797, 821, 823
OFFSET
1,1
LINKS
EXAMPLE
A002110(3)*p+1 and p are primes.
p=19 is in the sequence because also 30*p+1=571 is prime.
MATHEMATICA
Select[Prime[Range[900]], PrimeQ[30 # + 1] &] (* Vincenzo Librandi, Apr 11 2013 *)
PROG
(Magma) [p: p in PrimesUpTo(900) | IsPrime(30*p+1)]; // Vincenzo Librandi, Apr 11 2013
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
STATUS
approved