Number of 0..n arrays x(0..7) of 8 elements with zero 5th differences.

Terms

a(0) =2a(1) =5a(2) =8a(3) =13a(4) =26a(5) =53a(6) =112a(7) =197a(8) =302a(9) =465a(10) =688a(11) =1013a(12) =1406a(13) =1995a(14) =2790a(15) =3759a(16) =4990a(17) =6419a(18) =8132a(19) =10281a(20) =13134a(21) =16521a(22) =20352a(23) =24767a(24) =30018a(25) =36095a(26) =43022a(27) =51469a(28) =60976a(29) =71993