171268

Appears in sequences

• T(n,k)=Number of nXk arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns.at n=29A221551
• Number of 2Xn arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns.at n=6A221552
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=11A302618
• Expansion of 1/( (1 + x)^2 * (1 - x^2*(1 + x)^3) ).at n=22A375365