OFFSET
1,1
COMMENTS
a(5) has 372 decimal digits.
PROG
(PARI) f(n) = for(x=1, n, y=(x+1)^x-x^x; if(isprime(y), print1(y" ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Cino Hilliard, Aug 21 2003
STATUS
approved