303260

Appears in sequences

• a(n) = Sum_{k=0..n-3} T(n,k) * T(n,k+3), with T given by A026692.at n=7A026994
• Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 7*x + 2.at n=22A257617
• Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 7*x + 2.at n=26A257617