8125554503domain: NAppears in sequencesNumber of (n+1)X3 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=5A207296T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing.at n=22A207300