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 A125351 #9 Apr 30 2025 15:12:30
%S A125351 1,14,106,674,4946,37014,283330,2196782,17189858,135356102,1070440026,
%T A125351 8490518798,67481635442,537075903014,4278507764938,34105515215934,
%U A125351 271984108754114,2169645089403350,17310883131943930,138136179160503278
%N A125351 Number of base 14 circular n-digit numbers with adjacent digits differing by 4 or less.
%C A125351 [Empirical] a(base,n)=a(base-1,n)+A025014(n+1) for base>=4.int(n/2)+1
%H A125351 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 A125351 (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 A125351 nonn,base
%O A125351 0,2
%A A125351 _R. H. Hardin_, Dec 28 2006