A116036 - OEIS

%I #2 Mar 30 2012 17:40:36

%S 3,5,7,13,17,21,25,41,49,55,65,73,79,91,93,95,97,101,107,113,127,129,

%T 137,149,157,159,163,167,179,183,187,191,203,205,213,221,227,253,267,

%U 271,287,307,313,323,331,333,337,349,365,369,373,377,387,389,421,429

%N n+p(n)+p(p(n)) is a prime, where p(n) denotes the n-th prime.

%e 7+p(7)+p(p(7)) = 83 (prime).

%Y Cf. A115996.

%K nonn

%O 1,1

%A _Giovanni Resta_, Feb 13 2006