A106020 Primes p such that 28*p +- 3 are primes.

2, 7, 23, 37, 53, 67, 97, 163, 167, 227, 277, 337, 397, 503, 547, 563, 727, 953, 1033, 1213, 1277, 1297, 1423, 1543, 1553, 1783, 1847, 1987, 2003, 2017, 2203, 2213, 2237, 2347, 2633, 2663, 2693, 2957, 3257, 3313, 3343, 3373, 3517, 3617, 3637, 3847, 3923

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Prime[Range[400]], PrimeQ[28#+3]&&PrimeQ[28#-3]&]

Prog

(Magma) [n: n in [0..10000]| IsPrime(n) and IsPrime(28*n-3) and IsPrime(28*n+3)]; // Vincenzo Librandi, Nov 13 2010

Crossrefs

Sequence in context: A049560 A049588 A336786 * A248602 A045383 A244576

Adjacent sequences: A106017 A106018 A106019 * A106021 A106022 A106023

Keyword

nonn

Author

Zak Seidov, May 05 2005

Status

approved