299604

Appears in sequences

• Sum of squared spans of 2n-step polygons on square lattice.at n=8A006773
• Number of (n+2) X 5 binary arrays avoiding patterns 001 and 110 in rows, columns and nw-to-se diagonals.at n=30A202442
• Number of (n+2)X(2+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8.at n=11A252047