# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a125363 Showing 1-1 of 1 %I A125363 #7 Mar 31 2012 12:35:02 %S A125363 1,26,214,1406,10814,84426,675262,5474306,44862014,370667774, %T A125363 3082741374,25775117966,216460107326,1824572346350,15427938607960, %U A125363 130804716210096,1111599418378734,9465652381274166,80745664149260704 %N A125363 Number of base 26 circular n-digit numbers with adjacent digits differing by 4 or less. %C A125363 [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1 %o A125363 (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 A125363 nonn,base %O A125363 0,2 %A A125363 _R. H. Hardin_, Dec 28 2006 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE