Nearest integer to n^(9/2).

Terms

a(0) =0a(1) =1a(2) =23a(3) =140a(4) =512a(5) =1398a(6) =3175a(7) =6352a(8) =11585a(9) =19683a(10) =31623a(11) =48559a(12) =71832a(13) =102978a(14) =143740a(15) =196070a(16) =262144a(17) =344366a(18) =445375a(19) =568056a(20) =715542a(21) =891224a(22) =1098758a(23) =1342070a(24) =1625364a(25) =1953125a(26) =2330130a(27) =2761448a(28) =3252454a(29) =3808825