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 A127228 #9 Nov 21 2023 08:31:50
%S A127228 40319,362879,1814399,6652799,19958399,51891839,121080959,259459199,
%T A127228 518918399,980179199,1764322559,3047466239,5079110399,8204716799,
%U A127228 12893126399,19769460479,29654190719,43609103999,62990927999
%N A127228 a(n) = numerator of ((n + 4)! - (n - 4)!)/(n!).
%H A127228 Robert Israel, <a href="/A127228/b127228.txt">Table of n, a(n) for n = 4..10000</a>
%F A127228 a(n) = (n+4) * (n+3) * (n+2) * (n+1) * n * (n-1) * (n-2) * (n-3) - 1. - _Robert Israel_, Nov 20 2023
%p A127228 f::= n -> (n+4)*(n+3)*(n+2)*(n+1)*n*(n-1)*(n-2)*(n-3)-1:
%p A127228 map(f, [$4..30]); # _Robert Israel_, Nov 20 2023
%t A127228 Table[Numerator[((n + 4)! - (n - 4)!)/(n!)], {n, 4, 30}]
%Y A127228 Cf. A028387, A062938, A127227, A127229, A127230.
%K A127228 nonn,frac
%O A127228 4,1
%A A127228 _Artur Jasinski_, Jan 09 2007