86304

Appears in sequences

• Graham-Sloane-type lower bound on the size of a ternary (n,3,5) constant-weight code.at n=26A030505
• Numbers k such that phi(k) is equal to A008473(k).at n=16A039779
• Numbers n such that the arithmetic, geometric and harmonic means of phi(n) and sigma(n) are all integers.at n=29A065146
• Balanced refactorable numbers.at n=10A078543
• Partial sums of A100119. Sum of first n of the n-th centered n-gonal numbers.at n=28A130218
• Numbers k such that sigma(k) = 9*phi(k).at n=14A163667
• 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=33A187175
• a(n) = (2*n+23)*n*(n-1), a coefficient appearing in the formula a(n)*Pi/324+n+1 giving the average number of regions into which n random planes divide the cube.at n=32A248598
• Integers n such that sigma(n)/phi(n) is a perfect square.at n=41A293391
• Numbers whose even divisors have an integer harmonic mean.at n=40A348412
• Number of tetrahedra in the n X n queen graph.at n=15A388998