Number of Dyck paths of semilength n such that the number of peaks is strongly decreasing from lower to higher levels.

A288141

Number of Dyck paths of semilength n such that the number of peaks is strongly decreasing from lower to higher levels.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =5a(6) =10a(7) =22a(8) =46a(9) =148a(10) =324a(11) =722a(12) =1843a(13) =4634a(14) =12537a(15) =34248a(16) =95711a(17) =266761a(18) =724689a(19) =1983267a(20) =5553902a(21) =15900083a(22) =46201546a(23) =135511171a(24) =400668869a(25) =1189723253a(26) =3535186203a(27) =10516298421a(28) =31405658622a(29) =94378367065

External references