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 A254672 Primes prime(n) such that prime(n) + 6*n is also prime. 2
 5, 7, 11, 17, 19, 29, 31, 37, 43, 47, 53, 67, 71, 73, 79, 89, 101, 109, 113, 127, 149, 151, 157, 167, 181, 191, 193, 197, 227, 257, 263, 271, 277, 281, 331, 347, 349, 379, 383, 431, 433, 449, 467, 479, 499, 509, 521, 523, 547, 563, 569, 571, 577, 587, 619, 631 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 EXAMPLE prime(5) = 11 is in the sequence because 11 + 6*5 = 41 is prime. prime(8) = 19 is in the sequence because 19 + 6*8 = 67 is prime. MATHEMATICA Prime[Select[Range[150], PrimeQ[Prime[#] + 6 #] &]] PROG (MAGMA) [NthPrime(n): n in [1..200] | IsPrime(NthPrime(n)+6*n)] CROSSREFS Cf. A061067, A231232, A231383, A254462, A254665, A254673. Sequence in context: A106863 A200569 A110016 * A056775 A015917 A046133 Adjacent sequences:  A254669 A254670 A254671 * A254673 A254674 A254675 KEYWORD nonn AUTHOR Vincenzo Librandi, Feb 05 2015 STATUS approved

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Last modified May 17 16:03 EDT 2021. Contains 343980 sequences. (Running on oeis4.)