2490624

Appears in sequences

• Expansion of x*(1-x)^2/( (1-2*x^2)*(1-2*x)^2).at n=18A178945
• a(n) = ((2^n*n + i*(1 - i)^n - i*(1 + i)^n))/4, where i is the imaginary unit.at n=19A323225