146080

Appears in sequences

• a(n) = Sum_{k=0..floor(n/6)} C(n-3k,3k) * 2^(n-6k).at n=15A100137
• Number of permutations of 1..n arranged in a circle with exactly 3 adjacent element pairs in decreasing order.at n=7A151576
• Number of permutations of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order.at n=3A151580
• Triangle read by rows: T(n,k) is the number of permutations of 1..n arranged in a circle with exactly k descents.at n=58A334218
• Triangle read by rows: T(n,k) is the number of permutations of 1..n arranged in a circle with exactly k descents.at n=62A334218