SOLUTIONS ARE (0,0,0,2^1009),(2^1008,2^1008,2^1008,2^1008)
ANY SQUARE OF ODD IS CONGRUENT TO 1(MOD 8),SO
THE EQUATION HAS NO SOLUTION WITH AN ODD COMPONENT.
WE MUST HAVE A=2X,B=2Y,C=2Z,D=2W.PUTTING THESE VALUES WE GET
X^2+Y^2+Z^2+W^2=2^2016...CONTINUE THIS PROCESS
WE CAN PROCEED RECURSIVELY AS LONG AS RIGHT HAND SIDE IS 0(MOD8).
EVENTUALLY WE WILL ARRIVE AT L^2+M^2+N^2+P^2=4..
SOLUTIONS OF THIS EQUATION IS (1,1,1,1),(0,0,0,2)...
PUTTING THOSE VALUES WE WILL GET SOLUTIONS..