748342domain: NAppears in sequencesa(n) = 1 + C(2*n,n) + C(3*n,n).at n=8A029848Number of length-5 0..n arrays with no repeated value differing from the previous repeated value by one or less.at n=13A269608Square array A(n,k), n >= 1, k >= 1, read by antidiagonals, where A(n,k) is Sum_{j=1..n} binomial(j*k, k).at n=47A323663