160424domain: NAppears in sequencesa(n) = sum of terms of {a(1),a(2),a(3),...a(n-1)} which are coprime to n.at n=36A096217Number 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, 0), (-1, 1, -1), (0, 1, 1), (1, 0, 0)}.at n=11A149842