%I #3 Jul 14 2012 11:32:20

%S 7,1409,52021,3468667

%N Primes in A090831.

%C The next term A090831(242) ~ 9.7 * 10^457 is too large to be displayed here. See the indices in A144675.

%F a(n)=A090831(A144675(n)).

%o (PARI) for( n=1,999, /* n%10|print1([n]); */ isprime( p=sum( i=1,n, prime(i)^(n+1-i))) & print1(p","))

%K nonn,bref,hard

%O 1,1

%A _M. F. Hasler_, Feb 02 2009, Feb 16 2009