184644domain: 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, 0), (1, 1)}.at n=13A151407Noncube integers n such that n^2 + 1 is the sum of 2 positive cubes.at n=33A267119