Number of permutations of [n] having a shortest ascending run of length 3.
A228670
Number of permutations of [n] having a shortest ascending run of length 3.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =19a(4) =68a(5) =110a(6) =1679a(7) =11941a(8) =59470a(9) =528974a(10) =4907480a(11) =36965659a(12) =370685663a(13) =4086527638a(14) =40650345653a(15) =458464525689
External references
- oeis: A228670