A088176 Primes such that the previous two primes are a twin prime pair.

7, 11, 17, 23, 37, 47, 67, 79, 107, 113, 149, 157, 191, 197, 211, 233, 251, 277, 293, 317, 353, 431, 439, 467, 541, 577, 607, 631, 647, 673, 821, 827, 839, 863, 887, 1031, 1039, 1061, 1069, 1097, 1163, 1237, 1283, 1297, 1307, 1327, 1433, 1459, 1487, 1493, 1613

Offset: 1

Author

Zak Seidov, Sep 22 2003

Keywords

• easy
• nonn

Comments

Primes p such that prevprime(p) - 2 is prime. - Irina Gerasimova, Jun 28 2013

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A088175.

Programs

Magma

[NthPrime(n): n in [2..260] | IsPrime((NthPrime(n-1)-2))]; // Vincenzo Librandi, Nov 18 2014

Maple

A088176 := proc(n)
    nextprime(A006512(n)) ;
end proc:
seq(A088176(n),n=1..30) ; # R. J. Mathar, Nov 26 2014

PARI

is(n)=isprime(n) && isprime(precprime(n-1)-2) \\ Charles R Greathouse IV, Jun 28 2013

Extensions

More terms from Ray Chandler, Sep 25 2003

Definition clarified by Irina Gerasimova, Jun 28 2013