1090985

Appears in sequences

• Expansion of (1-2*x+2*x^2-x^3)/(1-3*x+5*x^2-3*x^3+x^4).at n=28A123879
• G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=54A199802
• Trisection 0 of A199802.at n=18A199927