A093326 - OEIS

%I #11 Jun 12 2013 02:00:40

%S 3,5,11,17,29,41,59,71,101,107,137,149,179,191,197,227,239,269,281,

%T 311,347,419,431,461,521,569,599,617,641,659,809,821,827,857,881,1019,

%U 1031,1049,1061,1091,1151,1229,1277,1289,1301,1319,1427,1451,1481,1487

%N Duplicate of A001359.

%C Name was: Primes p such that (p+p')/2+1 is a prime, where p' is the next prime after p.

%o (PARI) lista(nn) = {forprime(p=3, nn, if (isprime(1+(p + nextprime(p+1))\2), print1(p, ", ")););} \\ _Michel Marcus_, Jun 03 2013

%K dead

%O 1,1

%A _Giovanni Teofilatto_, Apr 25 2004

%E After correction a duplicate of A001359, _Michel Marcus_, Jun 03 2013