60519533domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=4A204793Number of (n+1)X6 0..1 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=4A204797