Number of elevated peakless Motzkin paths.

Terms

a(0) =0a(1) =0a(2) =1a(3) =1a(4) =1a(5) =2a(6) =4a(7) =8a(8) =17a(9) =37a(10) =82a(11) =185a(12) =423a(13) =978a(14) =2283a(15) =5373a(16) =12735a(17) =30372a(18) =72832a(19) =175502a(20) =424748a(21) =1032004a(22) =2516347a(23) =6155441a(24) =15101701a(25) =37150472a(26) =91618049a(27) =226460893a(28) =560954047a(29) =1392251012