Number of permutations in S_n avoiding 5234{bar 1} (i.e., every occurrence of 5234 is contained in an occurrence of a 52341).
A137546
Number of permutations in S_n avoiding 5234{bar 1} (i.e., every occurrence of 5234 is contained in an occurrence of a 52341).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =23a(5) =104a(6) =535a(7) =3082a(8) =19763a(9) =140885a(10) =1117101a(11) =9853890a(12) =96543043a(13) =1046549545a(14) =12480046880a(15) =162595262990
External references
- oeis: A137546