13615376

Appears in sequences

• Number of (n+1)X2 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.at n=6A205020
• Number of (n+1)X8 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.at n=0A205026
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the determinants of 2X2 subblocks nondecreasing rightwards and downwards.at n=21A205027
• T(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=21A207300