211418

Appears in sequences

• Number of cubic equations ax^3 + bx^2 + cx + d = 0 with integer coefficients |a|,|b|,|c|,|d| <= n, a <> 0, having one real root and two conjugate complex roots.at n=11A155193
• Expansion of Product_{k>=1} (1 + x^k)^(k*(k+1)*(2*k-1)/2).at n=10A294845