45642

Appears in sequences

• Number of n X 1 0..n+1-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.at n=8A265451
• T(n,k)=Number of nXk 0..n+k-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.at n=28A265458
• T(n,k)=Number of nXk 0..n+k-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.at n=35A265458
• Number of meanders of length n with Dyck-steps avoiding the consecutive steps UDU and DUD.at n=26A329703