38146

Appears in sequences

• Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.at n=4A221306
• Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.at n=3A221307
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.at n=31A221308
• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, with every occupancy equal to zero or two.at n=32A221308
• G.f.: Product_{k>=1} 1/(1-x^k)^(2*k-1).at n=15A253289
• G.f. satisfies A(x) = 1 + x*A(x)^5*(1 + x).at n=6A365184