a(n) = floor((n+1/n)^5).

Terms

a(0) =32a(1) =97a(2) =411a(3) =1386a(4) =3802a(5) =8917a(6) =18593a(7) =35409a(8) =62785a(9) =105101a(10) =167816a(11) =257592a(12) =382408a(13) =551684a(14) =776400a(15) =1069216a(16) =1444592a(17) =1918908a(18) =2510584a(19) =3240200a(20) =4130616a(21) =5207092a(22) =6497408a(23) =8031984a(24) =9844000a(25) =11969516a(26) =14447592a(27) =17320408a(28) =20633384a(29) =24435300