208494

Appears in sequences

• a(n) = 2*3^n*(2*n)!/(n!*(n+2)!).at n=7A000168
• Degrees of irreducible representations of Suzuki group Suz.at n=39A003902
• Kaprekar triples: q such that q = x + y + z and q^3 = x*10^2n + y*10^n + z, where z < 10^n and n is the number of digits in q. q is not a power of 10 (except q=1).at n=19A006887
• Pseudo-Kaprekar triples: q such that if q=x+y+z, then q^3=x*10^i + y*10^j + z, where (y*10^j+z < 10^i) and z < 10^j.at n=37A060768
• Erroneous version of A006887.at n=20A060809
• Square array T(n,k), read by antidiagonals: number of labeled trees, with increments of labels along edges constrained to -1,0,1, with n nodes that have no label greater than k.at n=35A101486
• a(n) = binomial(n+10, 10)*9^n.at n=3A196221
• Triangle T(n,k) read by rows: T(n,k) is the number of rooted genus-k maps with n edges, n>=0, 0<=k<=n.at n=28A238396
• Triangle read by rows: T(n,k) = number of normal planar lambda terms of size n with k free variables (n >= 1, 1 <= k <= n).at n=28A246323
• Triangle read by rows: T(n,g) is the number of rooted maps with n edges on an orientable surface of genus g.at n=16A269919
• Array read by antidiagonals: T(n,k) is the number of rooted (2k)-regular planar maps with n vertices, n >= 0, k >= 0.at n=52A380241