189871

Appears in sequences

• Number of n X n binary arrays with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.at n=9A147444
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.at n=20A147446
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11000-01100-00110-00011 pattern in any orientation.at n=21A147446
• Least k such that k^3 + q is divisible by 3^n where q is the n-th number congruent to 1 or -1 (mod 18).at n=15A251731