14267356381domain: NAppears in sequencesNumber of (n+1)X3 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.at n=6A205021Number of (n+1)X8 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.at n=1A205026