353299947

Appears in sequences

• Expansion of (-1 + 1/(1-7*x)^7)/(49*x); related to A036226.at n=7A053110
• a(n) = 7^n*Catalan(n).at n=7A156266
• a(n) = binomial(n + 8, 8)*7^n .at n=6A170932
• a(n) = n^n*(2*n)!/(n!*(n + 1)!).at n=7A291699