431877domain: NAppears 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), (0, -1, 0), (0, 1, -1), (1, 0, -1), (1, 1, 1)}.at n=10A149759Difference between pi(2^n) and the integer nearest to 2^n / log(2^n).at n=26A380198