268632

Appears in sequences

• a(n) = n*(n-1)*(n-2)*(3*n-2)/6.at n=28A096200
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=69A221381
• Number of 4 X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, with every occupancy equal to zero or two.at n=8A221382
• a(n) = n*sigma_4(n).at n=12A386749