Number of Dyck paths of semilength n having no ascents of length 2 that start at an odd level.

A114465

Number of Dyck paths of semilength n having no ascents of length 2 that start at an odd level.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =36a(6) =105a(7) =317a(8) =982a(9) =3105a(10) =9981a(11) =32520a(12) =107157a(13) =356481a(14) =1195662a(15) =4038909a(16) =13728369a(17) =46919812a(18) =161143157a(19) =555857157a(20) =1924956954a(21) =6689953057a(22) =23325404153a(23) =81567552320a(24) =286009944649

External references