3177326971domain: NAppears in sequencesTriangle of q-binomial coefficients for q=-9.at n=30A015121Triangle of q-binomial coefficients for q=-9.at n=33A015121Gaussian binomial coefficient [ n,2 ] for q = -9.at n=5A015260Gaussian binomial coefficient [ n,5 ] for q = -9.at n=2A015315