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 A153591 Primes p such that 6p^2+6p+1 is also prime. 1
 2, 3, 5, 7, 13, 19, 23, 31, 41, 43, 47, 67, 73, 97, 101, 107, 109, 137, 151, 199, 233, 239, 241, 251, 263, 283, 317, 331, 337, 353, 359, 379, 383, 419, 421, 431, 439, 449, 463, 541, 569, 571, 577, 601, 619, 647, 691, 701, 769, 823, 839, 877, 907, 929, 953, 971 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE For p = 2, 6p^2+6p+1 = 37 is prime; for p = 47, 6p^2+6p+1 = 13537 is prime. MATHEMATICA Select[Prime[Range[200]], PrimeQ[6#^2 + 6# + 1] &] (* Vincenzo Librandi, Oct 15 2012 *) PROG (MAGMA) [ p: p in PrimesUpTo(1000) | IsPrime(6*p^2+6*p+1) ]; CROSSREFS Cf. A007693 (n and 6n+1 are primes), A153812 (primes p such that 6*p^2+1 is also prime). Sequence in context: A082885 A118371 A330968 * A038917 A124661 A319126 Adjacent sequences:  A153588 A153589 A153590 * A153592 A153593 A153594 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Dec 29 2008 EXTENSIONS Edited and extended beyond a(20) by Klaus Brockhaus, Jan 01 2009 STATUS approved

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Last modified March 31 18:30 EDT 2020. Contains 333151 sequences. (Running on oeis4.)