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 A110063 #7 May 11 2019 10:11:48 %S A110063 -3,1,-2,-3,4,-3,-1,7,-7,2,8,-14,9,6,-22,23,-3,-28,45,-26,-25,73,-71, %T A110063 1,98,-144,72,97,-242,216,25,-339,458,-191,-364,797,-649,-173,1161, %U A110063 -1446,476,1334,-2607,1922,858,-3941,4529,-1064,-4799,8470,-5593,-3735,13269,-14063,1858,17004,-27332,15921,15146,-44336 %N A110063 Expansion of -(3 - x + 2*x^2) / (1 - x^3 + x^4). %C A110063 One of several sequences which appear to "spiral outwards" when plotted against each other (see A110061-64). %H A110063 Colin Barker, <a href="/A110063/b110063.txt">Table of n, a(n) for n = 0..1000</a> %H A110063 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (0,0,1,-1). %F A110063 a(n) = a(n-3) - a(n-4) for n>3. - _Colin Barker_, May 11 2019 %p A110063 seriestolist(series(-(3-x+2*x^2)/(1-x^3+x^4), x=0,60)); -or- Floretion Algebra Multiplication Program, FAMP Code: 4jbaseseq[A*B] with A = + .5'i + .5'j + .5'k + .5e and B = - .5'i - .25'j + .25'k - .5i' - .25j' + .25k' - .5'ii' - .25'ij' - .25'ik' - .25'ji' - .25'ki' - .5e %o A110063 (PARI) Vec(-(3 - x + 2*x^2) / (1 - x^3 + x^4) + O(x^45)) \\ _Colin Barker_, May 11 2019 %Y A110063 Cf. A110061, A110062, A110064. %K A110063 easy,sign %O A110063 0,1 %A A110063 _Creighton Dement_, Jul 10 2005