3036287domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 0), (-1, 0, 1), (0, 1, -1), (1, -1, 0), (1, 1, 1)}.at n=11A149775a(n) = smallest k such that k*2^n - 7 is a square.at n=30A188628Prime numbersat n=219222