|
%I #7 Mar 31 2012 12:35:01
%S 1,13,79,397,2311,13683,82987,510131,3168583,19831375,124840519,
%T 789359815,5007964879,31854401891,203018085727,1295846704827,
%U 8280758646855,52962057017063,338958602652535,2170431924516647
%N Number of base 13 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
|
