409683

Appears in sequences

• Expansion of x/(1 - 2*x^2 - x^3 + x^4).at n=35A122514
• 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, 0, -1), (0, 0, 1), (1, -1, -1), (1, 1, -1)}.at n=13A148225