253940736domain: NAppears in sequencesNumber of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.at n=5A159722Array 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=26A334772