OFFSET
1,1
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..1400
MATHEMATICA
nMax = 100; p := Floor[Sqrt[nMax - 1]]; Union[Flatten[Table[a^2 + b^2, {a, p}, {b, a, Floor[Sqrt[nMax - a^2]]}]]]^4 (* G. C. Greubel, Nov 09 2016 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Nov 29 2007
EXTENSIONS
Definition corrected by Zak Seidov, Aug 05 2009
STATUS
approved