1476944domain: 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=35A334778Number of permutations of 2 indistinguishable copies of 1..n arranged in a circle with exactly n local maxima.at n=7A334779