a(n) = T(8,n), array T given by A048472.

Terms

a(0) =1a(1) =10a(2) =37a(3) =109a(4) =289a(5) =721a(6) =1729a(7) =4033a(8) =9217a(9) =20737a(10) =46081a(11) =101377a(12) =221185a(13) =479233a(14) =1032193a(15) =2211841a(16) =4718593a(17) =10027009a(18) =21233665a(19) =44826625a(20) =94371841a(21) =198180865a(22) =415236097a(23) =868220929a(24) =1811939329a(25) =3774873601a(26) =7851737089a(27) =16307453953a(28) =33822867457a(29) =70061654017