73531392

Appears in sequences

• Number of permutations of length n containing exactly once 132 and 213, likewise for pattern pair (231,312).at n=21A089264
• Number of (n+2) X (4+2) 0..3 arrays with every 3 X 3 subblock row and column sum equal to 0 2 3 6 or 7 and every 3 X 3 diagonal and antidiagonal sum not equal to 0 2 3 6 or 7.at n=27A252110