249327

Appears in sequences

• Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order.at n=2A210053
• Number of (n+1)X4 0..3 arrays with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order.at n=2A210056
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order.at n=12A210061
• a(n) is the number of 2 X 2 matrices with elements 1..n where at least one row, at least one column and at least one of the two diagonals is strictly increasing.at n=27A391092