Triangle read by rows: T(n,k) is the number of hill-free Dyck paths of semilength n having pyramid weight k.

A114597

Triangle read by rows: T(n,k) is the number of hill-free Dyck paths of semilength n having pyramid weight k.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =2a(6) =1a(7) =5a(8) =9a(9) =3a(10) =1a(11) =7a(12) =21a(13) =23a(14) =5a(15) =1a(16) =9a(17) =38a(18) =74a(19) =56a(20) =8a(21) =1a(22) =11a(23) =60a(24) =170a(25) =237a(26) =130a(27) =13a(28) =1a(29) =13

External references