Floor((n+1/n)^8).

Terms

a(0) =256a(1) =1525a(2) =15241a(3) =106441a(4) =534597a(5) =2091239a(6) =6776036a(7) =18992710a(8) =47486563a(9) =108285670a(10) =228948163a(11) =454458310a(12) =855154435a(13) =1537112038a(14) =2655445795a(15) =4431034438a(16) =7171212835a(17) =11295015910a(18) =17363599363a(19) =26116502470a(20) =38514458563a(21) =55789499110a(22) =79503137635a(23) =111613460038a(24) =154551988195a(25) =211311224038