Numbers k such that k^2 has digits in nonincreasing order.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =8a(5) =9a(6) =10a(7) =20a(8) =21a(9) =29a(10) =30a(11) =31a(12) =80a(13) =88a(14) =90a(15) =100a(16) =200a(17) =210a(18) =290a(19) =300a(20) =310a(21) =800a(22) =880a(23) =900a(24) =1000a(25) =2000a(26) =2100a(27) =2900a(28) =2979a(29) =3000