288741

Appears in sequences

• Number of chiral n-ominoes in n-2 space.at n=13A036365
• Eight white kings and one red king on a 3 X 3 chessboard. G.f.: (1 + 5*x + 2*x^2)/(1 - 2*x - 11*x^2 - 6*x^3).at n=8A179597