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 A125360 #9 Apr 30 2025 15:15:17
%S A125360 1,23,187,1223,9347,72573,577279,4654925,37943939,311837075,
%T A125360 2579551497,21450968309,179155113323,1501673922057,12625149738521,
%U A125360 106416815593683,898941182378771,7607848721495845,64489085542582579,547401698354394021
%N A125360 Number of base 23 circular n-digit numbers with adjacent digits differing by 4 or less.
%C A125360 [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
%H A125360 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 A125360 (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 A125360 nonn,base
%O A125360 0,2
%A A125360 _R. H. Hardin_, Dec 28 2006