179191

Appears in sequences

• Concatenations C1 and C2 and C3 and C4 are all prime (see the comment lines).at n=32A034819
• Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row and column not having exactly two distinct values, and in every diagonal and antidiagonal having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=26A253022