Number of Dyck paths of semilength n such that each positive level has exactly nine peaks.

Terms

a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =0a(11) =0a(12) =0a(13) =0a(14) =0a(15) =0a(16) =0a(17) =0a(18) =0a(19) =10a(20) =440a(21) =6160a(22) =40040a(23) =140140a(24) =280280a(25) =320320a(26) =194480a(27) =48620a(28) =0a(29) =100