9373652

Appears in sequences

• a(n) = Sum_{k=0..n} binomial(9*n,9*k).at n=3A094213
• Number of closed walks of length n at a vertex of the cyclic graph on 9 nodes C_9.at n=27A094233
• a(n) = Sum_{k=0..floor(n/9)} binomial(n,9*k).at n=27A306860