449693

Properties

Appears in sequences

• Number of nX8 -1,1 arrays such that the sum over i=1..n,j=1..8 of i*x(i,j) is zero and rows are nondecreasing (ways to put 8 thrusters pointing east or west at each of n positions 1..n distance from the hinge of a south-pointing gate without turning the gate).at n=7A225309
• Number of 8Xn -1,1 arrays such that the sum over i=1..8,j=1..n of i*x(i,j) is zero and rows are nondecreasing (ways to put n thrusters pointing east or west at each of 8 positions 1..n distance from the hinge of a south-pointing gate without turning the gate).at n=7A225315
• Maximal coefficient of Product_{i=1..n} Sum_{j=0..n} x^(i*j).at n=8A369767
• Prime numbersat n=37685