948609890

Appears in sequences

• Half the number of (n+1)X4 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=3A209908
• Half the number of (n+1)X5 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=2A209909
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=17A209913
• T(n,k)=Half the number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having two or four distinct clockwise edge differences.at n=18A209913