%I #8 Mar 31 2012 12:35:02
%S 1,24,336,3984,54432,759744,10830144,156223392,2271228672,33183608352,
%T 486349645856,7142175976960,105014684996352,1545275154706944,
%U 22749491302298880,335018397934911744,4934548094852111360
%N Number of base 24 circular n-digit numbers with adjacent digits differing by 8 or less.
%C [Empirical] a(base,n)=a(base-1,n)+F(8) for base>=8.int(n/2)+1 and F(d) is the largest coefficient in (1+x+...+x^(2d))^n
%o (S/R) stvar $[N]:(0..M-1) init $[]:=0 asgn $[]->{*} kill +[i in 0..N-1](($[i]`-$[(i+1)mod N]`>8)+($[(i+1)mod N]`-$[i]`>8))
%K nonn,base
%O 0,2
%A _R. H. Hardin_, Dec 28 2006
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