Number of permutations of [n] with n-3 sequences.
A001759
Number of permutations of [n] with n-3 sequences.
Terms
- a(0) =2a(1) =28a(2) =236a(3) =1852a(4) =14622a(5) =119964a(6) =1034992a(7) =9434444a(8) =90968602a(9) =927367340a(10) =9982234068a(11) =113261721276
External references
- oeis: A001759