71865728domain: NAppears in sequencesTriangle read by rows: T(n,k) is the number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly k local maxima.at n=44A334778Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly n local maxima.at n=8A334779