24414062

Appears in sequences

• (5^n+(-1)^n)/2.at n=11A081340
• Catapolyoctagons (see Cyvin et al. for precise definition).at n=11A121177
• a(n) = (5^n - 1)/2.at n=11A125831
• Moore lower bound on the order of a (6,g)-cage.at n=19A198306
• a(n) = 5*a(n-2) + 2, a(0) = 1, a(1) = 2.at n=21A238366