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Sum of (Gaussian) q-binomial coefficients for q=-20.
1

%I #10 Nov 02 2012 02:23:07

%S 1,2,-17,764,137545,122514326,-439899108893,7840036943267888,

%T 563086539896825644669,200706071912897689508021450,

%U -288299907015593990815045809601769,2055229599788057603302245120218872775012,59043825067253137194943604004923346683555151793

%N Sum of (Gaussian) q-binomial coefficients for q=-20.

%H Vincenzo Librandi, <a href="/A015189/b015189.txt">Table of n, a(n) for n = 0..50</a>

%t Total/@Table[QBinomial[n,m,-20],{n,0,20},{m,0,n}] (* _Harvey P. Dale_, Aug 27 2012 *)

%K sign

%O 0,2

%A _Olivier GĂ©rard_

%E More terms from _Harvey P. Dale_, Aug 27 2012