417156

Appears in sequences

• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=6A317033
• Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=4A317035
• G.f. satisfies A(x) = 1 + x/(1 + x^4) * A(x/(1 + x^4)).at n=26A360899