38049

Appears in sequences

• Number of nonnegative solutions to x^2 + y^2 + z^2 <= n^2.at n=41A000604
• a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 2, -1, 1, 2.at n=15A025259
• a(n) = (4*n + 3)*(1 + 2*n^2)/3.at n=24A168574