Catalan transform of A135092.

Terms

a(0) =1a(1) =7a(2) =21a(3) =70a(4) =245a(5) =882a(6) =3234a(7) =12012a(8) =45045a(9) =170170a(10) =646646a(11) =2469012a(12) =9464546a(13) =36402100a(14) =140408100a(15) =542911320a(16) =2103781365a(17) =8167621770a(18) =31762973550a(19) =123708423300a(20) =482462850870