281571

Appears in sequences

• Number of ways to place n^2 nonattacking kings on 2n X 2n chessboard.at n=4A018807
• S(n,1) + S(n-1,2) + S(n-2,3) + ... + S(n+1-k,k), where k = floor((n+1)/2) and S(i,j) are Stirling numbers of the second kind.at n=13A024427
• Antidiagonal sums of triangle of Stirling numbers of 2nd kind A048993.at n=15A171367
• Number of ways to place 4n nonattacking kings on an 8 X 2n chessboard.at n=3A173782
• Array read by antidiagonals: T(m,n) is the number of maximum independent sets in the 2m X 2n king graph.at n=40A350819