371965

Appears in sequences

• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1001-1111 pattern in any orientation.at n=12A147132
• Discriminants of real quadratic number fields with 3-class rank 2.at n=41A269318
• Discriminants of real quadratic fields with 3-class group of type (3,3).at n=39A269319