%I A126476
%S A126476 1,8,44,252,1446,8300,47642,273466,1569700,9010108,51718192,296863410,
%T A126476 1704001644,9781001986,56143138234,322262685896,1849793972828,
%U A126476 10617852738356,60946677537854,349835093256180,2008060117756986
%N A126476 Number of base 8 n-digit numbers with adjacent digits differing by three 
               or less.
%C A126476 [Empirical] a(base,n)=a(base-1,n)+7^(n-1) for base>=3n-2; a(base,n)=a(base-1,
               n)+7^(n-1)-2 when base=3n-3
%o A126476 (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-2](($[i]`-$[i+1]`>
               3)+($[i+1]`-$[i]`>3))
%Y A126476 Cf. Base 8 differing by two or less A126395, one or less A126362.
%Y A126476 Sequence in context: A082762 A147828 A155604 this_sequence A112908 A001689 
               A028565
%Y A126476 Adjacent sequences: A126473 A126474 A126475 this_sequence A126477 A126478 
               A126479
%K A126476 nonn,base
%O A126476 0,2
%A A126476 Ron Hardin (rhhardin(AT)att.net), Dec 27 2006