77219

Appears in sequences

• a(n) = A128020(n)/n.at n=20A128021
• Number of n X n binary arrays with all ones connected only in a 1000-1010-1111 pattern in any orientation.at n=7A146807
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1010-1111 pattern in any orientation.at n=16A146809
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 1000-1010-1111 pattern in any orientation.at n=17A146809