40103domain: NAppears in sequencesNonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+337)^2 = y^2.at n=9A129999Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.at n=13A145929