268369920

Appears in sequences

• Number of different ways of coloring an n X n grid of squares using two colors so that the resulting grid has just one line of symmetry.at n=6A140650
• Sum of neighbor maps: number of 4Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 4Xn array.at n=6A222389
• Triangle read by rows: T(n, m) = A285061(n, m)*m!, 0 <= m <= n.at n=34A285066
• Number of simple graphs with n vertices and distinct rotations.at n=8A324461
• Numbers k such that A246601(k) > 2*k.at n=26A359084