78318

Appears in sequences

• Number of ways to place 2 nonattacking kings on an n X n board.at n=20A061995
• Number of permutations w in S_n whose Kazhdan-Lusztig polynomial evaluated at q=1 is less than or equal to 2; P_{id,w}(1) <= 2.at n=8A224255
• Number of non-equivalent ways under symmetry in one axis that 2 non-attacking kings of different colors can be placed on an n X n board.at n=19A357740