Number of strings of numbers x(i=1..8) in 0..n with sum i^2*x(i)^2 equal to n^2*64.

Terms

a(0) =1a(1) =7a(2) =36a(3) =119a(4) =356a(5) =962a(6) =2108a(7) =3719a(8) =6688a(9) =13801a(10) =22721a(11) =31805a(12) =53339a(13) =85156a(14) =116609a(15) =170040a(16) =238737a(17) =320840a(18) =472344a(19) =605257a(20) =737793a(21) =1090166a(22) =1402987a(23) =1569629a(24) =2180697a(25) =2805865a(26) =3201284a(27) =4201109a(28) =5157244a(29) =5875951