5517204

Appears in sequences

• Number of permutations p() of 1..n+4 with centered difference p(i+1)-p(i-1) < 0 exactly 3 times.at n=6A180881
• Number of permutations p() of 1..n+7 with centered difference p(i+1)-p(i-1) < 0 exactly 6 times.at n=3A180884