273616

Appears in sequences

• Number of permutations of 1..n avoiding adjacent step pattern up, up, down, down.at n=9A177522
• Number of nX5 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.at n=2A265925
• T(n,k)=Number of nXk 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.at n=23A265928
• Number of 3Xn 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.at n=4A265931