139794

Appears in sequences

• a(n)/100000 gives log_10(n) to 5 places.at n=24A027665
• Number of up-down permutations p of [n] such that for all i<n-1 the number of elements p(j) between p(i) and p(i+1) for j>i+1 differs from the number of elements p(k) between p(i+1) and p(i+2) for k>i+2.at n=12A367495