%I A125322
%S A125322 1,12,72,360,2080,12232,73656,449440,2770016,17195112,107304872,
%T A125322 672224048,4223186080,26586825472,167628931360,1058056409920,
%U A125322 6683674433920,42244783230496,267124015799712,1689602502335776
%N A125322 Number of base 12 circular n-digit numbers with adjacent digits differing 
               by 3 or less.
%C A125322 [Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1
%o A125322 (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))
%Y A125322 Sequence in context: A036392 A035472 A036398 this_sequence A126480 A030235 
               A088166
%Y A125322 Adjacent sequences: A125319 A125320 A125321 this_sequence A125323 A125324 
               A125325
%K A125322 nonn
%O A125322 0,2
%A A125322 Ron Hardin (rhhardin(AT)att.net), Dec 28 2006