A161191 - OEIS

%I #6 Sep 24 2013 05:42:35

%S 281,857,1433,2459,1163,1381,7213,4729,2143,2591,13411,8783,2971,9311,

%T 9733,9931,11423,12037,4357,4703,4831,4933,27743,5903,6011,30259,6491,

%U 6827,20879,35059,7151,7759,8219,25321,8501,25849,8863,9067,9227,29641

%N Primes in A161190.

%F A161190 INTERSECT A000040.

%e a(1)=281 because 281 is prime and also the sum of the primes in the 4 diagonals: 11+31+37+43+47+53+59 = 281

%Y Cf. A161190 - A161194

%K easy,nonn,less

%O 1,1

%A _Enoch Haga_, Jun 06 2009