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%I #7 Nov 01 2012 11:24:31
%S 1,2,-6,148,4676,980232,-274157336,520386179408,1312327085726736,
%T 22403542811017395232,-508377595506902032430176,
%U 78115306822996588019507120448,15953583859604206839297545233032256
%N Sum of (Gaussian) q-binomial coefficients for q=-9.
%H Vincenzo Librandi, <a href="/A015173/b015173.txt">Table of n, a(n) for n = 0..60</a>
%t Total/@Table[QBinomial[n, m, -9], {n, 0, 20}, {m, 0, n}] (* _Vincenzo Librandi_, Nov 01 2012 *)
%K sign
%O 0,2
%A _Olivier GĂ©rard_