Number of peakless Motzkin paths of length n and having no uhh...hd's starting at level 0, where u = (1, 1), h = (1, 0) and d = (1, -1).

A190159

Number of peakless Motzkin paths of length n and having no uhh...hd's starting at level 0, where u = (1, 1), h = (1, 0) and d = (1, -1).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =2a(6) =6a(7) =17a(8) =44a(9) =107a(10) =252a(11) =588a(12) =1376a(13) =3245a(14) =7717a(15) =18485a(16) =44535a(17) =107796a(18) =261937a(19) =638673a(20) =1562105a(21) =3831655a(22) =9423580a(23) =23233536a(24) =57412612a(25) =142174255a(26) =352770105a(27) =876922947a(28) =2183621209a(29) =5446177428

External references