Numbers k such that k and k^2 use only the digits 2, 3, 4, 6 and 9.

Terms

a(0) =2a(1) =3a(2) =6a(3) =63a(4) =264a(5) =632a(6) =964a(7) =2236a(8) =4932a(9) =4942a(10) =4943a(11) =22236a(12) =22292a(13) =26394a(14) =26443a(15) =49332a(16) =49342a(17) =49423a(18) =49693a(19) =49694a(20) =62963a(21) =66292a(22) =66332a(23) =222923a(24) =494236a(25) =494262a(26) =494392a(27) =494462a(28) =496632a(29) =499332