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 A022221 #22 Sep 08 2022 08:44:46
%S A022221 1,259,57535,12485095,2698853335,583026951031,125936508182839,
%T A022221 27202382491194295,5875718100153221815,1269155234987097152695,
%U A022221 274137535269957102205111,59213707780769522731688119,12790160886494733304250601655
%N A022221 Gaussian binomial coefficients [ n,3 ] for q = 6.
%H A022221 Vincenzo Librandi, <a href="/A022221/b022221.txt">Table of n, a(n) for n = 3..200</a>
%F A022221 G.f.: x^3/((1-x)*(1-6*x)*(1-36*x)*(1-216*x)). - _Vincenzo Librandi_, Aug 11 2016
%F A022221 a(n) = Product_{i=1..3} (6^(n-i+1)-1)/(6^i-1), by definition. - _Vincenzo Librandi_, Aug 11 2016
%t A022221 Table[QBinomial[n, 3, 6], {n, 3, 20}] (* _Vincenzo Librandi_, Aug 11 2016 *)
%o A022221 (Sage) [gaussian_binomial(n,3,6) for n in range(3,16)] # _Zerinvary Lajos_, May 27 2009
%o A022221 (Magma) r:=3; q:=6; [&*[(1-q^(n-i+1))/(1-q^i): i in [1..r]]: n in [r..20]]; // _Vincenzo Librandi_, Aug 11 2016
%o A022221 (PARI) r=3; q=6; for(n=r,30, print1(prod(j=1,r,(1-q^(n-j+1))/(1-q^j)), ", ")) \\ _G. C. Greubel_, Jun 07 2018
%o A022221 (GAP) List([3..15],n->Product([1..3],i->(6^(n-i+1)-1)/(6^i-1))); # _Muniru A Asiru_, Jul 04 2018
%K A022221 nonn,easy
%O A022221 3,2
%A A022221 _N. J. A. Sloane_
%E A022221 Offset changed by _Vincenzo Librandi_, Aug 11 2016