Numbers k such that k and k^2 use only the digits 2, 3, 5, 6 and 9.

Terms

a(0) =3a(1) =5a(2) =6a(3) =23a(4) =25a(5) =63a(6) =235a(7) =236a(8) =256a(9) =2323a(10) =2365a(11) =2523a(12) =22925a(13) =23566a(14) =25565a(15) =26335a(16) =59635a(17) =62925a(18) =232236a(19) =236565a(20) =252236a(21) =255663a(22) =263235a(23) =626335a(24) =996963a(25) =2293325a(26) =2353656a(27) =2359923a(28) =2555256a(29) =2556663