205142945972domain: NAppears in sequencesNumber of (n+2)X4 0..2 arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=4A186623T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with 3X3 subblock sums nondecreasing rightwards and downwards.at n=16A186625