Numbers whose digits are in nondecreasing order in bases 8 and 9.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =10a(9) =11a(10) =12a(11) =13a(12) =14a(13) =15a(14) =20a(15) =21a(16) =22a(17) =23a(18) =30a(19) =31a(20) =91a(21) =92a(22) =93a(23) =94a(24) =95a(25) =101a(26) =102a(27) =103a(28) =111a(29) =151