417014920

Appears in sequences

• 1/4 the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.at n=2A210148
• 1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.at n=2A210151
• T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences.at n=12A210156