7441991domain: NAppears in sequencesa(n) = a(n-1) + a(n-2) + 1 for n>1, a(0)=3, a(1)=11.at n=29A022410Number 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, 1), (-1, 1, 0), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.at n=12A149071