45788domain: NAppears in sequencesNumber of walks within N^2 (the first quadrant of Z^2) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, 0), (0, 1), (1, -1)}.at n=15A151378Number of 4-step one space at a time bishop's tours on an n X n board summed over all starting positions.at n=37A187157