6377291

Appears in sequences

• a(n) = n*3^n - 1.at n=11A060352
• Number of alpha-beta evaluations in a tree of depth n and branching factor b=3.at n=27A060647
• Clique number of commuting graph of symmetric group S_n.at n=43A135908
• Clique number of commuting graph of alternating group A_n.at n=43A135909
• a(n) = 4*3^n-1.at n=13A171498
• Expansion of (1+3*x+5*x^2-x^3)/((1-x^2)*(1-3*x^2)).at n=27A220944
• Least number k such that half of the numbers from 0 to k inclusive contain the digit n.at n=6A344474
• Expansion of g.f.: (1 + x - 2*x^2 + 2*x^4)/((1-x)*(1-3*x^2)).at n=28A358027