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

Terms

a(0) =3a(1) =5a(2) =23a(3) =235a(4) =583a(5) =2885a(6) =2983a(7) =5385a(8) =9235a(9) =29323a(10) =29923a(11) =92333a(12) =293233a(13) =598823a(14) =2322335a(15) =2885885a(16) =2932335a(17) =2989235a(18) =2993323a(19) =2998823a(20) =2999233a(21) =9233385a(22) =22925583a(23) =23223335a(24) =23522235a(25) =29325585a(26) =29882333a(27) =58252833a(28) =93932335a(29) =93985385