80897393

Appears in sequences

• Expansion of (1 - x)/(1 - 2*x - x^3).at n=24A052980
• Expansion of (1 + x)/(1 + 2x + x^3).at n=24A110513
• Number of one-sided n-step prudent walks, avoiding single west step only, i.e., two or more consecutive west steps are permitted.at n=23A190512