Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.

A159722

Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.

Terms

    a(0) =12a(1) =576a(2) =17376a(3) =448800a(4) =10861056a(5) =253940736a(6) =5807161344a(7) =130675728384

External references