A254672 Primes prime(n) such that prime(n) + 6*n is also prime.

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

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