Achilles number whose double is also an Achilles number.

Terms

a(0) =432a(1) =972a(2) =1944a(3) =2000a(4) =2700a(5) =3456a(6) =4500a(7) =5292a(8) =5400a(9) =5488a(10) =8748a(11) =9000a(12) =10584a(13) =10800a(14) =12348a(15) =12500a(16) =13068a(17) =15552a(18) =16000a(19) =17496a(20) =18000a(21) =18252a(22) =21168a(23) =21296a(24) =21600a(25) =24300a(26) =24500a(27) =24696a(28) =25000a(29) =26136