-147630domain: ZAppears in sequencesa(n) = (1 - (-11)^n)/12.at n=5A014993Triangle of q-binomial coefficients for q=-11.at n=22A015124Triangle of q-binomial coefficients for q=-11.at n=26A015124Gaussian binomial coefficient [ n,5 ] for q = -11.at n=1A015317