22394880

Appears in sequences

• Number of ways to number the cells of an n X n square grid with 1,2,3,...,n^2 so that successive integers are in the same row or column.at n=3A096970
• Array read by antidiagonals: T(n,m) is the number of (directed) Hamiltonian paths in K_n X K_m.at n=24A269565
• Base-6 complementary numbers: n equals the product of the 6 complement (6-d) of its base-6 digits d.at n=25A298976
• a(0) = 1; for n > 0, a(n) = A000120(n) * a(n-A000120(n)), where A000120(n) is the binary weight of n.at n=53A320008
• Integer areas of integer-sided triangles where the lengths of two of the sides are cubes.at n=29A329536