487311

Appears in sequences

• Expansion of (1-x^9 ) / (1-x)^9.at n=15A008491
• 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, 0), (-1, 1, -1), (0, 0, 1), (1, -1, 1), (1, 1, 0)}.at n=10A150200