22868187338domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of ways to place k non-attacking kings in each row of an n X n board, 0 <= k <= floor((n+1)/4) + [n=1].at n=34A390419Number of n X n grids with 3 non-attacking kings on each row.at n=13A390736