1885694

Appears in sequences

• G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=52A199802
• G.f.: 1/(1 + x - x^2 - x^3 + x^4).at n=53A199803
• Trisection 1 of A199802.at n=17A199928