148352

Appears in sequences

• Number of ways to place 2n nonattacking kings on a 4 X 2n cylindrical chessboard.at n=9A194644
• Number of ways to place 10n nonattacking kings on a vertical cylinder 20 X 2n.at n=1A195659
• Number of ways to trisect a triangle with side length n exactly into three identical parts in a triangular lattice.at n=10A271858