6927230

Appears in sequences

• Number of functions f:{1,2,...,n}->{1,2,...,n} such that Im(f) contain two fixed elements.at n=6A126778
• Triangular array T(n,k): functions f:{1,2,...,n}-> {1,2,...,n} such that each of k fixed (but arbitrary) elements are in the image of f.at n=38A174551
• Second differences of eighth powers (A001016).at n=7A255178
• Triangle read by rows: T(n,k) is the number of endofunctions on [n] where the difference between the smallest and largest values in the image of the function is k, 0 <= k < n.at n=35A391488