266585018

Appears in sequences

• Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum not 3 or 6 and every diagonal and antidiagonal sum 3 or 6.at n=6A251825
• Number of (n+2) X (7+2) 0..3 arrays with every 3 X 3 subblock row and column sum not 3 or 6 and every diagonal and antidiagonal sum 3 or 6.at n=3A251828