prob142(N)=
{
  \\ answer = 1006193
  \\   x: 434657
  \\   y: 420968
  \\   z: 150568
  for(i=1,N,
	for(j=1,i-1,
		if (issquare(i+j),
			if (issquare(i-j),
				for(k=1,j-1,
					if(issquare(i+k),
						if (issquare(i-k),
							if (issquare(j+k),
								if (issquare(j-k),
									print1("x: ");
									print(i);
									print1("y: ");
									print(j);
									print1("z: ");
									print(k);
									quit;
								);
							);
						);
					);
				);
			);
		);
	);
	if (i % 10000 == 0, print(i));
  );
}