Number of permutations in S_n avoiding {bar 5}{bar 4}132 (i.e., every occurrence of 132 is contained in an occurrence of a 54132).
A137554
Number of permutations in S_n avoiding {bar 5}{bar 4}132 (i.e., every occurrence of 132 is contained in an occurrence of a 54132).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =43a(6) =147a(7) =575a(8) =2648a(9) =14617a(10) =96696a(11) =754585a(12) =6794015a(13) =69116493a(14) =781266266a(15) =9688636317a(16) =130551322618
External references
- oeis: A137554