541370505

Appears in sequences

• Number of (n+1) X 4 0..2 arrays with every 2 X 2 subblock singular.at n=5A185515
• Number of (n+1)X7 0..2 arrays with every 2X2 subblock singular.at n=2A185518
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock singular.at n=30A185521