69892domain: NAppears in sequencesSum of (Gaussian) q-binomial coefficients for q=-17.at n=4A015184Number of (n+2) X 4 binary arrays with each 3 X 3 subblock having rows and columns in lexicographically nondecreasing order.at n=29A184541a(n) = Sum_{k=0..n} binomial(3*n+3*k+1,n-k).at n=6A390452