531524

Appears in sequences

• a(n) is the constant term in expansion of Product_{ k = 1..n } (x^k + 1/x^k)^3.at n=8A124995
• 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, 0, 0), (1, -1, 0), (1, 0, 0), (1, 0, 1), (1, 1, -1)}.at n=10A150410
• Maximal coefficient of (1 + x)^3 * (1 + x^2)^3 * (1 + x^3)^3 * ... * (1 + x^n)^3.at n=8A369709