127803

Appears in sequences

• Number 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, 1, 0), (1, -1, 1), (1, 0, -1), (1, 1, 1)}.at n=9A149734
• a(n) is the number of primitive solutions to the inverse Pythagorean equation 1/x^2 + 1/y^2 = 1/z^2 such that x <= y and x + y + z <= 10^n.at n=11A341990