869740

Appears in sequences

• Number of permutations of length n which avoid the patterns 321, 12354.at n=28A116846
• Number T(n,k) of permutations of [n] with exactly k (possibly overlapping) occurrences of the consecutive pattern 3412; triangle T(n,k), n>=0, 0<=k<=max(0,floor(n/2-1)), read by rows.at n=35A264319
• Number of permutations of [n] with exactly three (possibly overlapping) occurrences of the consecutive pattern 3412.at n=4A264322