21815361

Appears in sequences

• Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock having one, two or three distinct clockwise edge differences.at n=6A210383
• Number of (n+1)X8 0..2 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.at n=0A210389
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences.at n=21A210390