128605

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, 1), (0, 0, 1), (1, 0, 0), (1, 1, -1)}.at n=9A150215
• a(n) = 169*n^2 - 140*n + 29.at n=27A156639
• Positive numbers y such that y^2 is of the form x^2+(x+839)^2 with integer x.at n=9A159896