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

Terms

a(0) =6a(1) =63a(2) =359a(3) =1235a(4) =3532a(5) =9478a(6) =19257a(7) =38560a(8) =77476a(9) =126541a(10) =210018a(11) =369550a(12) =526449a(13) =789226a(14) =1274930a(15) =1669850a(16) =2334818a(17) =3544722a(18) =4379421a(19) =5884724a(20) =8470175a(21) =10089464a(22) =12944196a(23) =18222068a(24) =21049447a(25) =26194973a(26) =35852532a(27) =40087478a(28) =49010287a(29) =66350658