64658

Appears in sequences

• Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=6A305341
• Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=6A305346
• a(n) = (n^4-3*n^2+4*n+2)/2.at n=19A387525