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 A061403 #11 Aug 16 2017 04:10:00
%S A061403 384,7680,368640,30965760,3963617280,713451110400,171228266496000,
%T A061403 52738306080768000,20251509535014912000,9477706462386978816000,
%U A061403 5307515618936708136960000,3502960308498227370393600000
%N A061403 Denominators in the series for Bessel function J4(x).
%H A061403 G. C. Greubel, <a href="/A061403/b061403.txt">Table of n, a(n) for n = 0..220</a> (terms 0..50 from T. D. Noe)
%H A061403 <a href="/index/Be#Bessel">Index entries for sequences related to Bessel functions or polynomials</a>
%t A061403 Denominator[Take[CoefficientList[Series[BesselJ[4, x], {x, 0, 500}], x], {5, -1, 2}]] (* _G. C. Greubel_, Aug 15 2017 *)
%Y A061403 J1: A002474, J2: A002506, J3: A014401 for formula etc.
%K A061403 nonn,easy
%O A061403 0,1
%A A061403 _Frank Ellermann_, Jun 11 2001