1002915

Appears in sequences

• Super ballot numbers: 6(2n)!/(n!(n+2)!).at n=14A007054
• a(n) = 6*(2n-4)!/((n-2)!n!), if n>2. a(0) = 1, a(1) = a(2) = 2.at n=16A091712
• Numerators in expansion of (1-x)^(3/2).at n=16A161200
• a(n) = 3/(n + 1) * Catalan(2*n).at n=7A387248