273322980domain: NAppears in sequencesNumber of permutations of 6 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.at n=3A159737Array read by antidiagonals: T(n,k) is the number of permutations of k indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.at n=31A334772