Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 4 local maxima.

A159724

Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 4 local maxima.

Terms

    a(0) =0a(1) =0a(2) =144a(3) =174216a(4) =57255120a(5) =11991842928

External references