Number of permutations in S_n avoiding {bar 1}432{bar 5} (i.e., every occurrence of 432 is contained in an occurrence of a 14325).
A137556
Number of permutations in S_n avoiding {bar 1}432{bar 5} (i.e., every occurrence of 432 is contained in an occurrence of a 14325).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =43a(6) =148a(7) =592a(8) =2838a(9) =16447a(10) =113606a(11) =913191a(12) =8353006a(13) =85454055a(14) =965231960a(15) =11919052562
External references
- oeis: A137556