Numbers k such that k and k^2 use only the digits 3, 4, 5, 8 and 9.

Terms

a(0) =3a(1) =583a(2) =94583a(3) =939938a(4) =5994538a(5) =9454543a(6) =59485583a(7) =59534388a(8) =59994538a(9) =59994583a(10) =94844393a(11) =594439938a(12) =594889438a(13) =595385538a(14) =943395938a(15) =5859994538a(16) =9433893438a(17) =9484383933a(18) =9484489438a(19) =9949589933a(20) =59538933438a(21) =59948589933a(22) =93985934583a(23) =94543354388a(24) =94543844583a(25) =99495959388a(26) =99498459583a(27) =585955935583a(28) =594843339333a(29) =599498489538