894660domain: 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, -1), (0, -1), (0, 1), (1, 1)}.at n=13A151396a(n) = floor((n + 1/2)^5).at n=15A219088