OFFSET
1,1
LINKS
Zak Seidov, Table of n, a(n) for n = 1..1000
EXAMPLE
a(1)=3 because (3^4+1)/2=82/2=41 is prime.
MATHEMATICA
Select[Range[1, 501, 2], PrimeQ[(#^4+1)/2]&] (* Harvey P. Dale, Jun 04 2011 *)
PROG
(Magma) [ n: n in [0..2500] | IsPrime((n^4+1) div 2) ]; // Vincenzo Librandi, Apr 15 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Jun 19 2004
STATUS
approved