Number of permutations of [n] having a shortest ascending run of length 6.
A228673
Number of permutations of [n] having a shortest ascending run of length 6.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =923a(7) =3430a(8) =6004a(9) =10008a(10) =16014a(11) =24750a(12) =17153135a(13) =139520497a(14) =747544744a(15) =2907714483a(16) =9788905840a(17) =30236892651
External references
- oeis: A228673