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 A015330 #19 Dec 07 2019 12:18:18 %S A015330 1,102943,12363454300,1450319733570100,170699761008128301202, %T A015330 20081461365765141084602686,2362583929682268848603506007900, %U A015330 277955299234477922983349122651265300 %N A015330 Gaussian binomial coefficient [ n,6 ] for q = -7. %D A015330 J. Goldman and G.-C. Rota, The number of subspaces of a vector space, pp. 75-83 of W. T. Tutte, editor, Recent Progress in Combinatorics. Academic Press, NY, 1969. %D A015330 I. P. Goulden and D. M. Jackson, Combinatorial Enumeration. Wiley, NY, 1983, p. 99. %D A015330 M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351. %H A015330 Vincenzo Librandi, <a href="/A015330/b015330.txt">Table of n, a(n) for n = 6..200</a> %H A015330 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (102943, 1766193051, -4228553683893, -1450393913575299, 71272260266184957,488728224518062249, -558545864083284007). %F A015330 G.f.: x^6 / ( (x-1)*(117649*x-1)*(16807*x+1)*(49*x-1)*(343*x+1)*(7*x+1)*(2401*x-1) ). - _R. J. Mathar_, Sep 02 2016 %t A015330 Table[QBinomial[n, 6, -7], {n, 6, 20}] (* _Vincenzo Librandi_, Oct 29 2012 *) %o A015330 (Sage) [gaussian_binomial(n,6,-7) for n in range(6,14)] # _Zerinvary Lajos_, May 27 2009 %K A015330 nonn,easy %O A015330 6,2 %A A015330 _Olivier Gérard_, Dec 11 1999