Number of permutations in S_n avoiding 1{bar 5}324 (i.e., every occurrence of 1324 is contained in an occurrence of a 15324).
A137539
Number of permutations in S_n avoiding 1{bar 5}324 (i.e., every occurrence of 1324 is contained in an occurrence of a 15324).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =104a(6) =532a(7) =3005a(8) =18453a(9) =121853a(10) =858239a(11) =6406401a(12) =50422167a(13) =416666542a(14) =3602203962a(15) =32481902733
External references
- oeis: A137539