200430861345domain: NAppears in sequencesNumber of permutations p() of 1..n+6 with centered difference p(i+1)-p(i-1) < 0 exactly 5 times.at n=8A180883Number of permutations p() of 1..n+9 with centered difference p(i+1)-p(i-1) < 0 exactly 8 times.at n=5A180886