516560651

Appears in sequences

• Number of alpha-beta evaluations in a tree of depth n and branching factor b=3.at n=35A060647
• a(n) = 4*3^n-1.at n=17A171498
• Expansion of (1+3*x+5*x^2-x^3)/((1-x^2)*(1-3*x^2)).at n=35A220944