Nearest integer to n^(5/2).

Terms

a(0) =0a(1) =1a(2) =6a(3) =16a(4) =32a(5) =56a(6) =88a(7) =130a(8) =181a(9) =243a(10) =316a(11) =401a(12) =499a(13) =609a(14) =733a(15) =871a(16) =1024a(17) =1192a(18) =1375a(19) =1574a(20) =1789a(21) =2021a(22) =2270a(23) =2537a(24) =2822a(25) =3125a(26) =3447a(27) =3788a(28) =4149a(29) =4529