6073352192domain: NAppears in sequencesExpansion of g.f. 1/(1 - 2*x + 8*x^2).at n=25A090591Number of defective 4-colorings of an n X 2 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order.at n=26A229572