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

Terms

a(0) =1a(1) =20a(2) =147a(3) =649a(4) =2195a(5) =6301a(6) =15601a(7) =34847a(8) =71509a(9) =137520a(10) =249799a(11) =433038a(12) =720820a(13) =1159650a(14) =1809461a(15) =2749459a(16) =4079634a(17) =5928317a(18) =8451964a(19) =11845820a(20) =16345291a(21) =22238744a(22) =29865253a(23) =39632411a(24) =52016744a(25) =67583239a(26) =86980484a(27) =110967120