86740

Appears in sequences

• Number of 6-step S, E, and NW-moving king's tours on an n X n board summed over all starting positions.at n=28A187511
• Number of nonnegative integer arrays of length n+2*6-2 with new values introduced in order 0 upwards and every value appearing only in runs of at least 6.at n=32A211698
• a(n) = floor(M(g(n-1)+1,..,g(n))), where M = harmonic mean and g(n) = n*(n + 1)*(n + 2)*(n + 3)/24.at n=36A227018