659560

Appears in sequences

• Number of permutations of 5 indistinguishable copies of 1..n arranged in a circle with exactly 2 local maxima.at n=2A159734
• Number of 2n-bead necklaces labeled with numbers 1..7 not allowing reversal, with neighbors differing by exactly 1.at n=12A208726
• Array 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=17A334772