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 A158327 #7 Sep 27 2018 17:56:16 %S A158327 0,2,0,2,0,6,0,2,0,6,0,6,0,6,0,2,0,12,0,6,0,6,0,6,0,6,0,6,0,18,0,2,0, %T A158327 6,0,12,0,6,0,6,0,18,0,6,0,6,0,6,0,12,0,6,0,20,0,6,0,6,0,18,0,6,0,2,0, %U A158327 18,0,6,0,18,0,12,0,6,0,6,0,18,0,6,0,6,0,18,0,6,0,6,0,36,0,6,0,6,0,6,0,12,0 %N A158327 a(n) = A145444(n)-A145511(n). %H A158327 Antti Karttunen, <a href="/A158327/b158327.txt">Table of n, a(n) for n = 1..65537</a> %o A158327 (PARI) t1=direuler(p=2, 200, 1/(1-X)^3) ; t2=direuler(p=2, 2, 1+3*X^2+2*X^3, 200) ; a444=dirmul(t1, t2) ; t3=direuler(p=2, 2, 1-2*X^1+7*X^2, 200) ; a511=dirmul(t1, t3); a444-a511 ; print(%) ; \\ R. J. Mathar, Apr 22 2009 %Y A158327 Cf. A145444, A145511, A158315, A158360. %K A158327 nonn %O A158327 1,2 %A A158327 _Paul Curtz_, Mar 16 2009 %E A158327 More terms from _R. J. Mathar_, Apr 22 2009