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 A125354 #9 Apr 30 2025 15:13:22
%S A125354 1,17,133,857,6413,48867,381313,3016163,24107789,194175677,1573174523,
%T A125354 12802874695,104553143825,856091328837,7024086050415,57721845597987,
%U A125354 474910998928093,3910960204957435,32229946522723645,265747140536421765
%N A125354 Number of base 17 circular n-digit numbers with adjacent digits differing by 4 or less.
%C A125354 [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
%H A125354 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 A125354 (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 A125354 nonn,base
%O A125354 0,2
%A A125354 _R. H. Hardin_, Dec 28 2006