357884

Appears in sequences

• Coefficient of x^floor(n/2) in the expansion of (1+x+x^3)^n.at n=18A192440
• G.f.: 1/(1-2*x+2*x^2-x^3+x^4).at n=50A199802
• Trisection 2 of A199802.at n=16A199929
• Coefficient of x^n in the expansion of (1+x+x^3)^(2*n).at n=9A370185