74479700228domain: NAppears in sequencesNumber of (n+1)X5 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=4A206219Number of (n+1)X6 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=3A206220