Number of Carlitz compositions of n with exactly four descents.

Terms

a(0) =5a(1) =22a(2) =72a(3) =204a(4) =510a(5) =1168a(6) =2516a(7) =5140a(8) =10054a(9) =18976a(10) =34707a(11) =61776a(12) =107374a(13) =182697a(14) =304982a(15) =500455a(16) =808462a(17) =1287499a(18) =2023697a(19) =3142604a(20) =4825797a(21) =7333862a(22) =11037829a(23) =16462497a(24) =24345385a(25) =35716339a(26) =52005295a(27) =75186849a(28) =107973181a(29) =154071381