2019310610domain: NAppears in sequencesNumber of (n+1)X5 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards.at n=4A204226Number of (n+1) X 6 0..2 arrays with the sums of 2 X 2 subblocks nondecreasing rightwards and downwards.at n=3A204227