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 A015379 #17 Sep 08 2022 08:44:39
%S A015379 1,-35309406,1454546516636543,-58525570007342935110900,
%T A015379 2362701900656492615160524472603,
%U A015379 -95337871447349860183019420430515900118,3847259697771549596318959641032366290112134229
%N A015379 Gaussian binomial coefficient [ n,9 ] for q=-7.
%D A015379 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 A015379 I. P. Goulden and D. M. Jackson, Combinatorial Enumeration. Wiley, NY, 1983, p. 99.
%D A015379 M. Sved, Gaussians and binomials, Ars. Combinatoria, 17A (1984), 325-351.
%H A015379 Vincenzo Librandi, <a href="/A015379/b015379.txt">Table of n, a(n) for n = 9..140</a>
%F A015379 a(n) = Product_{i=1..9} ((-7)^(n-i+1)-1)/((-7)^i-1). - _Vincenzo Librandi_, Nov 04 2012
%t A015379 Table[QBinomial[n, 9, -7],{n, 9, 20}] (* _Vincenzo Librandi_, Nov 04 2012 *)
%o A015379 (Sage) [gaussian_binomial(n,9,-7) for n in range(9,15)] # _Zerinvary Lajos_, May 25 2009
%o A015379 (Magma) r:=9; q:=-7; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..20]]; // _Vincenzo Librandi_, Nov 04 2012
%Y A015379 Cf. Gaussian binomial coefficients [n, 9] for q = -2..-13: A015371, A015375, A015376, A015377, A015378, A015380, A015381, A015382, A015383, A015384, A015385. - _Vincenzo Librandi_, Nov 04 2012
%K A015379 sign,easy
%O A015379 9,2
%A A015379 _Olivier Gérard_