118204

Appears in sequences

• Number of 5-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=38A187175
• a(n) is the largest integer k such that sigma(k)/(d(k)*sopf(k)) = n where d=A000005, sigma=A000203 and sopf=A008472.at n=16A328175