484210domain: NAppears in sequencesTriangle of q-binomial coefficients for q=-9.at n=17A015121Triangle of q-binomial coefficients for q=-9.at n=18A015121Gaussian binomial coefficient [ n,2 ] for q = -9.at n=3A015260Gaussian binomial coefficient [ n,3 ] for q = -9.at n=2A015277