11019840

Appears in sequences

• Number of (n+1)X4 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.at n=2A185801
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock trace equal to some horizontal or vertical neighbor 2X2 subblock trace.at n=12A185807