Triangle of numbers of Dyck paths.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =3a(5) =1a(6) =14a(7) =14a(8) =6a(9) =1a(10) =84a(11) =84a(12) =40a(13) =10a(14) =1a(15) =594a(16) =594a(17) =300a(18) =90a(19) =15a(20) =1a(21) =4719a(22) =4719a(23) =2475a(24) =825a(25) =175a(26) =21a(27) =1a(28) =40898a(29) =40898