188433

Appears in sequences

• Expansion of x*(2 - x - x^2 - 2*x^3)/(1 - x - x^2)^2.at n=21A339610
• G.f.: Sum_{k>=0} x^k * Product_{j=1..4*k} (1 + x^j)/(1 - x^j).at n=29A385090