3506100

Appears in sequences

• a(n) = 3*binomial(4*n,n)/(n+1).at n=8A007228
• Duplicate of A007228.at n=8A024497
• Array t(n,k) = binomial(n*k, n+1)/n, where n >= 1 and k >= 2, read by ascending antidiagonals.at n=47A241262