1596510

Appears in sequences

• Number of strings over Z_3 of length n with trace 0 and subtrace 2.at n=14A073949
• Number of elements of GF(3^n) with trace 0 and subtrace 2.at n=14A074002
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(3^(k-1)).at n=13A344247
• Dirichlet g.f.: Product_{k>=2} (1 + k^(-s))^(3^(k-1)).at n=13A344266
• Theta series of 18-dimensional lattice Kappa_18.at n=4A362878
• Number of words of length 3*n that can be formed with a three-letter alphabet when the number of letters of each type is == 1 (mod 3).at n=5A391469