This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A125332 #9 Apr 30 2025 15:05:45 %S A125332 1,22,142,730,4390,26742,166966,1056350,6755686,43557742,282683662, %T A125332 1844363158,12086792278,79504493454,524626264542,3471321731070, %U A125332 23023441009542,153019621221454,1018866986428048,6795005681508340 %N A125332 Number of base 22 circular n-digit numbers with adjacent digits differing by 3 or less. %C A125332 [Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1 %H A125332 OEIS Wiki, <a href="/wiki/Number_of_base_k_circular_n-digit_numbers_with_adjacent_digits_differing_by_d_or_less">Number of base k circular n-digit numbers with adjacent digits differing by d or less</a> %o A125332 (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 A125332 nonn,base %O A125332 0,2 %A A125332 _R. H. Hardin_, Dec 28 2006