489456

Appears in sequences

• a(n) = n*(n+1)^2*(6*n^3-5*n^2+3*n+2)/24.at n=11A101379
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.at n=37A221351
• Number of 2 X n arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without 2-loops.at n=7A221352