Number of permutations in S_n that avoid the pattern 31524.
A256196
Number of permutations in S_n that avoid the pattern 31524.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =24a(5) =119a(6) =694a(7) =4579a(8) =33216a(9) =259401a(10) =2147525a(11) =18632512a(12) =167969934a(13) =1563027614a(14) =14937175825a(15) =146016423713
External references
- oeis: A256196