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%I #7 Mar 31 2012 12:35:02
%S 1,23,187,1223,9347,72573,577279,4654925,37943939,311837075,
%T 2579551497,21450968309,179155113323,1501673922057,12625149738521,
%U 106416815593683,898941182378771,7607848721495845,64489085542582579,547401698354394021
%N Number of base 23 circular n-digit numbers with adjacent digits differing by 4 or less.
%C [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
%o (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>4)+($[(i+1)mod N]`-$[i]`>4))
%K nonn,base
%O 0,2
%A _R. H. Hardin_, Dec 28 2006
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