Number of length 7 1..(n+1) arrays with every leading partial sum divisible by 2 or 3.

Terms

a(0) =4a(1) =59a(2) =713a(3) =2187a(4) =16384a(5) =33048a(6) =106056a(7) =217603a(8) =523733a(9) =823543a(10) =2097152a(11) =3014848a(12) =5663370a(13) =8603223a(14) =14688611a(15) =19487171a(16) =35831808a(17) =45765000a(18) =70508164a(19) =94687187a(20) =139133363a(21) =170859375a(22) =268435456a(23) =322831872a(24) =448523376a(25) =563223955a(26) =760729349