Integers n such that digits in n and n^2 are in nondecreasing order.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =12a(9) =13a(10) =15a(11) =16a(12) =17a(13) =34a(14) =35a(15) =37a(16) =38a(17) =67a(18) =116a(19) =117a(20) =167a(21) =334a(22) =335a(23) =337a(24) =367a(25) =667a(26) =1667a(27) =3334a(28) =3335a(29) =3337