Number of compositions of n with exactly eight descents.

Terms

a(0) =34a(1) =474a(2) =3914a(3) =24222a(4) =123713a(5) =548540a(6) =2178219a(7) =7909965a(8) =26662725a(9) =84357961a(10) =252677505a(11) =721404913a(12) =1974020281a(13) =5200561960a(14) =13240895310a(15) =32684520969a(16) =78435463950a(17) =183422986603a(18) =418849888662a(19) =935640152746