Odd Achilles numbers.

Terms

a(0) =675a(1) =1125a(2) =1323a(3) =3087a(4) =3267a(5) =4563a(6) =6075a(7) =6125a(8) =7803a(9) =8575a(10) =9747a(11) =10125a(12) =11907a(13) =11979a(14) =14283a(15) =15125a(16) =16875a(17) =19773a(18) =21125a(19) =22707a(20) =25947a(21) =27783a(22) =28125a(23) =29403a(24) =30375a(25) =33075a(26) =33275a(27) =36125a(28) =36963a(29) =41067