12950528

Appears in sequences

• Number of (n+1)X2 0..3 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=6A185568
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum.at n=21A185571
• T(n,k)=Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock sum equal to exactly one or two horizontal and vertical neighbor 2 X 2 subblock sums.at n=21A188370