8044478

Appears in sequences

• a(n) = Sum_{k=0..floor(n/6)} binomial(n-3k,3k).at n=36A100134
• Lower level digraph derived from a voltage graph.at n=37A115055
• a(n) = Sum_{k=0..floor(n/3)} binomial(n+3*k,n-3*k).at n=18A373905
• a(n) = Sum_{k=0..n} binomial(3*k,3*(n-k)).at n=12A391902
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-3*k,3*k).at n=18A392402
• a(n) = Sum_{k=0..floor(2*n/3)} binomial(3*k,2*n-3*k).at n=18A392432