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 A097329 #15 Mar 17 2023 09:55:56
%S A097329 3,21,231,1155,21945,504735,4542615,140821065,140821065,1830673845,
%T A097329 78718975335,3699791840745,62896461292665,62896461292665,
%U A097329 3710891216267235,3710891216267235,248629711489904745
%N A097329 Least common multiple of {3,7,11,...,4n+3}.
%C A097329 The first three terms are the same as the denominators in A074638.
%H A097329 Vincenzo Librandi, <a href="/A097329/b097329.txt">Table of n, a(n) for n = 0..100</a>
%t A097329 Table[LCM@@Range[3, 4n+3, 4], {n, 0, 19}]
%o A097329 (Magma) k:=67; [Lcm([h: h in [3..j by 4]]): j in [3..k by 4]]; // _Bruno Berselli_, May 03 2011
%Y A097329 Cf. A004767 (4n+3), A074638 (denominator of 1/3+1/7+/11+...+1/(4n+3)).
%Y A097329 Cf. A051539.
%K A097329 easy,nonn
%O A097329 0,1
%A A097329 _T. D. Noe_, Aug 04 2004