198589

Properties

Appears in sequences

• T(n,k)=Number of nXk arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.at n=22A221929
• Number of 2Xn arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.at n=5A221930
• Evaluation of the Motzkin polynomials at 1/2 and normalized with 2^n.at n=8A330799
• Prime numbersat n=17870