501072domain: 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), (-1, 1), (0, -1), (0, 1), (1, -1)}.at n=13A151434Expansion of (1/x) * Series_Reversion( x / (1 + x^2 * (1 + x)^4) ).at n=13A389155