7198489

Appears in sequences

• Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock having zero permanent.at n=7A206248
• T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock having zero permanent.at n=28A206255
• Squares that remain squares if you decrease them by 3 times a repunit with the same number of digits.at n=12A273230