4470310976

Appears in sequences

• Number of permutations of 1..n avoiding adjacent step pattern up, down, down, down.at n=12A177518
• Number T(n,k) of permutations of [n] with exactly k occurrences of the consecutive step pattern up, down, down, down; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/4)), read by rows.at n=25A242820