271388

Appears in sequences

• Expansion of (1-x)/(1-x+2*x^2-x^3).at n=50A078019
• Expansion of 1/(1 + 2*x + 3*x^2 + x^3).at n=33A127896
• G.f. satisfies A(x) = (1 + x)^3 + x*A(x)^4.at n=6A366699