236195

Appears in sequences

• Number of alpha-beta evaluations in a tree of depth n and branching factor b=3.at n=21A060647
• Chebyshev U(n,x) polynomial evaluated at x=243=2*11^2+1.at n=2A097765
• a(n) = 3^(p-1) + (3^p - 1) where p is the n-th prime.at n=4A098116
• Clique number of commuting graph of symmetric group S_n.at n=34A135908
• Clique number of commuting graph of alternating group A_n.at n=34A135909
• Numbers of the form i*9^j-1 (i=1..8, j >= 0).at n=43A140576
• a(n) = 4*3^n-1.at n=10A171498
• a(n) = 4*9^n-1.at n=5A198961
• Expansion of (1+3*x+5*x^2-x^3)/((1-x^2)*(1-3*x^2)).at n=21A220944
• a(n) = n^4 + 4*n^2 + 3.at n=22A304726
• Numbers that are the sum of six fourth powers in exactly ten ways.at n=29A345822
• Expansion of g.f.: (1 + x - 2*x^2 + 2*x^4)/((1-x)*(1-3*x^2)).at n=22A358027