409128

Appears in sequences

• Number of (n+1) X 2 0..3 arrays with every 2 X 2 subblock nonsingular.at n=3A183702
• Number of (n+1)X5 0..3 arrays with every 2X2 subblock nonsingular.at n=0A183705
• T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock nonsingular.at n=6A183710
• T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock nonsingular.at n=9A183710
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and determinant >= 3n.at n=15A211153