Number of permutations of [n] having a shortest ascending run of length 2.
A185652
Number of permutations of [n] having a shortest ascending run of length 2.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =5a(5) =18a(6) =89a(7) =519a(8) =3853a(9) =27555a(10) =233431a(11) =2167152a(12) =21596120a(13) =232817282a(14) =2718706924a(15) =33814848445a(16) =448311181346
External references
- oeis: A185652