55382

Appears in sequences

• Number of (5+1) X (n+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically.at n=21A258558
• Number of nX6 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=6A303688
• Number of nX7 0..1 arrays with every element unequal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.at n=5A303689
• Defined by: Sum_{i=1..n} i*a(i)/n^i = 1, n>=1.at n=6A374601