Triangle read by rows: T(n,k) is number of Schroeder paths of length 2n and having k peaks at height 1, for 0 <= k <= n.

A104219

Triangle read by rows: T(n,k) is number of Schroeder paths of length 2n and having k peaks at height 1, for 0 <= k <= n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =2a(5) =1a(6) =11a(7) =7a(8) =3a(9) =1a(10) =45a(11) =28a(12) =12a(13) =4a(14) =1a(15) =197a(16) =121a(17) =52a(18) =18a(19) =5a(20) =1a(21) =903a(22) =550a(23) =237a(24) =84a(25) =25a(26) =6a(27) =1a(28) =4279a(29) =2591

External references