A125354 - OEIS

%I #7 Mar 31 2012 12:35:02

%S 1,17,133,857,6413,48867,381313,3016163,24107789,194175677,1573174523,

%T 12802874695,104553143825,856091328837,7024086050415,57721845597987,

%U 474910998928093,3910960204957435,32229946522723645,265747140536421765

%N Number of base 17 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