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Number of base 32 circular n-digit numbers with adjacent digits differing by 4 or less.
0

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

%S 1,32,268,1772,13748,108132,871228,7113068,58698164,488329172,

%T 4089121128,34423417280,291070095356,2470369205804,21033518369320,

%U 179580640999392,1536920470892852,13181385142142708,113261618364481612

%N Number of base 32 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