Golygon
A golygon (or serial isogon of 90°) is any rectilinear polygon with all right angles, whose sides are consecutive integer lengths. To create a golygon, start at one point, and take a first step one unit to the north or the south. The second step is two units to the east or the west. The third is three units to the north or the south. Continue until your path closes on itself and reaches the starting point. No crossing or backtracking is allowed.
