OFFSET
1,1
LINKS
Hieronymus Fischer, Table of n, a(n) for n = 1..10000
EXAMPLE
a(3)=39, since 39=3*13 and (3^4+13^4)/2=14321 which is prime.
CROSSREFS
KEYWORD
nonn
AUTHOR
Hieronymus Fischer, Nov 11 2007
EXTENSIONS
Minor edits by Hieronymus Fischer, May 06 2013
STATUS
approved