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%I #7 Mar 31 2012 12:35:01
%S 1,14,86,434,2542,15134,92318,570822,3567150,22467638,142378416,
%T 906569832,5794153978,37142273910,238653335454,1536292377434,
%U 9904175388110,63924370849750,412963549917890,2669744556760982
%N Number of base 14 circular n-digit numbers with adjacent digits differing by 3 or less.
%C [Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1
%o (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>3)+($[(i+1)mod N]`-$[i]`>3))
%K nonn,base
%O 0,2
%A _R. H. Hardin_, Dec 28 2006