400950

Appears in sequences

• Number of ways to place 2 nonattacking knights on an n X n toroidal board.at n=29A172529
• Number of ways to place 2 nonattacking kings on an n X n toroidal board.at n=29A179403
• a(n) = (7*n+1) * (8*n+1)^(n-2) * 9^n.at n=3A251699
• Number of non-isomorphic multiset partitions of weight n in which the part sizes are relatively prime.at n=12A321283
• Column k=1 of Brent's table A381083 related to prime gaps 2n.at n=18A381084