Number of permutations of [n] with exactly three occurrences of the consecutive step pattern up, down, down.
A246248
Number of permutations of [n] with exactly three occurrences of the consecutive step pattern up, down, down.
Terms
- a(0) =11259a(1) =443718a(2) =12450834a(3) =297195804a(4) =6589314360a(5) =141014406600
External references
- oeis: A246248