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 A136778 #9 Aug 31 2016 06:22:51 %S A136778 1,3,15,75,381,1947,9975,51159,262497,1347123,6913911,35485779, %T A136778 182133885,934823451,4798101855,24626900271,126400914849,648769995939, %U A136778 3329901037119,17091174551835,87722802540957,450249343708827,2310966659437671,11861354115061383 %N A136778 Number of primitive multiplex juggling sequences of length n, base state <2,1> and hand capacity 2. %H A136778 Colin Barker, <a href="/A136778/b136778.txt">Table of n, a(n) for n = 1..1000</a> %H A136778 S. Butler and R. Graham, <a href="http://arXiv.org/abs/0801.2597">Enumerating (multiplex) juggling sequences</a>, arXiv:0801.2597 [math.CO], 2008. %H A136778 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (7,-9,-3). %F A136778 G.f.: (x-4*x^2+3*x^3)/(1-7*x+9*x^2+3*x^3). %F A136778 a(n) = 7*a(n-1)-9*a(n-2)-3*a(n-3) for n>3. - _Colin Barker_, Aug 31 2016 %o A136778 (PARI) Vec((x-4*x^2+3*x^3)/(1-7*x+9*x^2+3*x^3) + O(x^30)) \\ _Colin Barker_, Aug 31 2016 %Y A136778 Cf. A136777. %K A136778 nonn,easy %O A136778 1,2 %A A136778 _Steve Butler_, Jan 21 2008