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 A125327 #9 Apr 30 2025 15:04:04
%S A125327 1,17,107,545,3235,19487,120311,752895,4762851,30376427,194992877,
%T A125327 1258241573,8153851075,53026892117,345868792705,2261537247275,
%U A125327 14818530646995,97269300449331,639438066653237,4208955700527261
%N A125327 Number of base 17 circular n-digit numbers with adjacent digits differing by 3 or less.
%C A125327 [Empirical] a(base,n)=a(base-1,n)+A025012(n+1) for base>=3.int(n/2)+1
%H A125327 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 A125327 (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 A125327 nonn,base
%O A125327 0,2
%A A125327 _R. H. Hardin_, Dec 28 2006