Number of permutations of [n] in which the longest increasing run has length 5.
A000456
Number of permutations of [n] in which the longest increasing run has length 5.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =1a(5) =10a(6) =99a(7) =1024a(8) =11304a(9) =133669a(10) =1695429a(11) =23023811a(12) =333840443a(13) =5153118154a(14) =84426592621
External references
- oeis: A000456