841449

Appears in sequences

• Number of (n+1) X 2 0..2 arrays with every 2 X 2 subblock singular.at n=7A185513
• Number of (n+1)X9 0..2 arrays with every 2X2 subblock singular.at n=0A185520
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock singular.at n=28A185521
• Total path length of the complete ternary tree of height n.at n=10A289399