Catalan triangle A028364 with row reversion.

Terms

a(0) =1a(1) =2a(2) =1a(3) =5a(4) =3a(5) =2a(6) =14a(7) =9a(8) =7a(9) =5a(10) =42a(11) =28a(12) =23a(13) =19a(14) =14a(15) =132a(16) =90a(17) =76a(18) =66a(19) =56a(20) =42a(21) =429a(22) =297a(23) =255a(24) =227a(25) =202a(26) =174a(27) =132a(28) =1430a(29) =1001