Numbers whose square has its digits 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) =83a(19) =106a(20) =107a(21) =116a(22) =117a(23) =167a(24) =183a(25) =334a(26) =335a(27) =337a(28) =367a(29) =383