253312

Appears in sequences

• Number of (n+1)X3 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.at n=2A186916
• Number of (n+1)X4 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.at n=1A186917
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.at n=7A186923
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces.at n=8A186923