2722500

Appears in sequences

• Number of binary arrangements without adjacent 1's on n X n torus connected ne-sw nw-se.at n=5A067960
• Coefficients of power series A(x) consist entirely of squares, where A(x) = A083352(x)^2 + A083352(x) - 1.at n=47A083353
• Number of nX5 binary arrays with no element equal to the mod 3 sum of its diagonal and antidiagonal neighbors.at n=11A183372
• Number of n X n 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=7A208137
• Areas of primitive Heronian triangles K which are perfect squares.at n=35A248108