15258789062domain: NAppears in sequences(5^n+(-1)^n)/2.at n=15A081340Catapolyoctagons (see Cyvin et al. for precise definition).at n=15A121177a(n) = (5^n - 1)/2.at n=15A125831Moore lower bound on the order of a (6,g)-cage.at n=27A198306a(n) = 5*a(n-2) + 2, a(0) = 1, a(1) = 2.at n=29A238366