a(n) = A000108(n)*A015518(n+1), where A000108 are the Catalan numbers and A015518(n) = 2*A015518(n-1) + 3*A015518(n-2).

A185010

a(n) = A000108(n)*A015518(n+1), where A000108 are the Catalan numbers and A015518(n) = 2*A015518(n-1) + 3*A015518(n-2).

Terms

    a(0) =1a(1) =2a(2) =14a(3) =100a(4) =854a(5) =7644a(6) =72204a(7) =703560a(8) =7037030a(9) =71772844a(10) =743844452a(11) =7810307960a(12) =82909630972a(13) =888316731800

External references