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%I #12 Feb 13 2021 01:12:53
%S 1,2,3,4,5,6,7,8,9,10,11,19,20,21,29,30,31,39,40,41,49,50,51,59,60,61,
%T 69,70,71,79,80,81,82,90,91,92,100,101,102,171,172,173,181,182,183,
%U 191,192,193,262,263,264,272,273,274,282,283,284
%N Numbers with the property that all pairs of consecutive base-9 digits differ by 0 or 1.
%H Harvey P. Dale, <a href="/A032980/b032980.txt">Table of n, a(n) for n = 1..1000</a>
%t Select[Range[300],Max[Abs[Differences[IntegerDigits[#,9]]]]<2&] (* _Harvey P. Dale_, Oct 15 2014 *)
%Y Cf. A007095.
%K nonn,base
%O 1,2
%A _Clark Kimberling_