Number of Lyndon compositions of n whose reverse is not a co-Lyndon composition.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =1a(6) =2a(7) =7a(8) =16a(9) =37a(10) =76a(11) =166a(12) =328a(13) =669a(14) =1326a(15) =2626a(16) =5138a(17) =10104a(18) =19680a(19) =38442a(20) =74822a(21) =145715a(22) =283424a(23) =551721a(24) =1073224a(25) =2089049a(26) =4066414a(27) =7919304a(28) =15426840a(29) =30066900