A144676 Primes in A090831.

7, 1409, 52021, 3468667

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..4.

Formula

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

Prog

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

Crossrefs

Sequence in context: A289482 A214010 A145451 * A243232 A362060 A265963

Adjacent sequences: A144673 A144674 A144675 * A144677 A144678 A144679

Keyword

nonn,bref,hard

Author

M. F. Hasler, Feb 02 2009, Feb 16 2009

Status

approved