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 A303673 #11 Apr 29 2018 13:00:28
%S A303673 1,-2,-16,-204,-3264,-60384,-1239912,-27591408,-655324704,
%T A303673 -16443029408,-432731364992,-11882079044992,-339084517212576,
%U A303673 -10026995732141760,-306530743192692480,-9669854410016300160,-314315622535266332160
%N A303673 a(n) = [x^n] (15! / Sum_{k=0..n} (k+15)!*x^k)^(1/8).
%H A303673 Seiichi Manyama, <a href="/A303673/b303673.txt">Table of n, a(n) for n = 0..439</a>
%p A303673 [seq(coeff(series((factorial(15)/add(factorial(k+15)*x^k,k=0..n))^(1/8), x,30),x,n),n=0..25)]; # _Muniru A Asiru_, Apr 29 2018
%o A303673 (PARI) N=66; x='x+O('x^N); Vec((15!/sum(k=0, N, (k+15)!*x^k))^(1/8))
%Y A303673 Cf. A077607, A303671, A303672.
%K A303673 sign
%O A303673 0,2
%A A303673 _Seiichi Manyama_, Apr 28 2018