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 A093920 #7 Jul 25 2015 00:39:41
%S A093920 1,4,15,40,205,276,1939,4432,13689,18100,199111,200784,2610205,
%T A093920 3136420,3191595,7012576,119213809,137103012,2604957247,2605199080,
%U A093920 2608367181,3084857644,70951725835,71062911792,355315542025,442803520276
%N A093920 Row sums of A093919.
%t A093920 T[n_, k_] := LCM @@ Drop[ Reverse[ Range[n]], (k - n)]; Table[ Plus @@ Table[ T[n, k], {k, n}], {n, 26}] (* _Robert G. Wilson v_, Apr 27 2004 *)
%Y A093920 Cf. A093919.
%K A093920 nonn
%O A093920 1,2
%A A093920 _Amarnath Murthy_, Apr 25 2004
%E A093920 Edited by _Robert G. Wilson v_, Apr 27 2004