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%I #10 Feb 12 2021 22:01:32
%S 1,2,3,4,5,6,7,8,12,13,14,15,16,17,18,22,23,24,25,26,27,28,32,33,34,
%T 35,36,37,38,42,43,44,45,46,47,48,52,53,54,55,56,57,58,62,63,64,65,66,
%U 67,68,72,73,74,75,76,77,78,108,109,113,114,115
%N Numbers with the property that all pairs of consecutive base-9 digits differ by more than 1.
%t Select[Range[120],Min[Abs[Differences[IntegerDigits[#,9]]]]>1&] (* _Harvey P. Dale_, Nov 06 2012 *)
%K nonn,base
%O 1,2
%A _Clark Kimberling_
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