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 A125366 #9 Apr 30 2025 15:17:05
%S A125366 1,29,241,1589,12281,96279,773245,6293687,51780089,429498473,
%T A125366 3585931251,30099267623,253765101341,2147470776077,18230728488283,
%U A125366 155192678512659,1324259934723241,11323518226156213,97003621972668547
%N A125366 Number of base 29 circular n-digit numbers with adjacent digits differing by 4 or less.
%C A125366 [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
%H A125366 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 A125366 (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 A125366 nonn,base
%O A125366 0,2
%A A125366 _R. H. Hardin_, Dec 28 2006