Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly 5 local maxima.

A159719

Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly 5 local maxima.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1480a(5) =1268292a(6) =279561086a(7) =36381368048

External references