A067463 - OEIS

%I #8 Feb 17 2021 11:04:03

%S 5,13,19,23,29,37,41,43,53,59,61,67,83,101,103,113,131,149,157,163,

%T 167,193,223,227,229,239,263,271,281,283,293,311,313,331,347,349,373,

%U 397,401,433,461,467,491,503,523,563,571,599,601,607,631,643,653,661,683

%N Primes p such that p+sigma(p+1) is prime.

%o (PARI) isok(p) = isprime(p) && isprime(p+sigma(p+1)); \\ _Michel Marcus_, Feb 17 2021

%Y Cf. A008333, A067464.

%K easy,nonn

%O 1,1

%A _Benoit Cloitre_, Feb 23 2002