260080

Appears in sequences

• Sum of neighbor maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX2 array.at n=8A222445
• a(n) = Sum_{k=0..n-1} T(n-k, k+1) where T(n, k) is the number of tight n X k pavings (defined in A285357).at n=8A298432