132977

Appears in sequences

• Number of disconnected regular simple graphs on n vertices with girth exactly 5.at n=43A210715
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nXk array.at n=30A220794
• Equals two maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 3Xn array.at n=5A220796