Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k up steps starting at even heights.

A101919

Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k up steps starting at even heights.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =12a(8) =8a(9) =1a(10) =1a(11) =33a(12) =42a(13) =13a(14) =1a(15) =1a(16) =88a(17) =183a(18) =102a(19) =19a(20) =1a(21) =1a(22) =232a(23) =717a(24) =624a(25) =205a(26) =26a(27) =1a(28) =1a(29) =609

External references