Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #14 Feb 13 2021 01:12:36
%S 1,2,3,4,5,6,7,11,12,13,17,18,19,23,24,25,26,30,31,32,36,37,38,55,56,
%T 57,61,62,63,67,68,69,86,87,88,92,93,94,98,99,117,118,119,123,124,125,
%U 126,130,131,132,150,151,155,156,157,161,162,163
%N Numbers with the property that all pairs of consecutive base-5 digits differ by 0 or 1.
%H Robert Israel, <a href="/A032976/b032976.txt">Table of n, a(n) for n = 1..10000</a>
%p filter:= proc(n) local L,S;
%p L:= convert(n,base,5);
%p S:= convert(L[2..-1] - L[1..-2],set);
%p max(S)<=1 and min(S)>=-1
%p end proc:
%p select(filter, [$1..1000]); # _Robert Israel_, Nov 16 2016
%Y Cf. A007091.
%K nonn,base
%O 1,2
%A _Clark Kimberling_