180097domain: 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, -1, 1), (-1, 0, 1), (0, 0, 1), (0, 1, 0), (1, 1, -1)}.at n=10A149955Primes of the form p^2 + q^2 - 1 where p and q are consecutive primes.at n=22A227340Prime numbersat n=16351