Triangle read by rows related to Catalan triangle A009766.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =2a(6) =5a(7) =9a(8) =9a(9) =5a(10) =14a(11) =28a(12) =34a(13) =28a(14) =14a(15) =42a(16) =90a(17) =123a(18) =123a(19) =90a(20) =42a(21) =132a(22) =297a(23) =440a(24) =497a(25) =440a(26) =297a(27) =132a(28) =429a(29) =1001