1386131

Appears in sequences

• 1/4 the number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.at n=2A209850
• 1/4 the number of (n+1)X4 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.at n=2A209853
• T(n,k)=1/4 the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one or four distinct clockwise edge differences.at n=12A209858