Number of permutations of [n] in which the longest increasing run has length 3.
A000402
Number of permutations of [n] in which the longest increasing run has length 3.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =6a(4) =41a(5) =293a(6) =2309a(7) =19975a(8) =189524a(9) =1960041a(10) =21993884a(11) =266361634a(12) =3465832370a(13) =48245601976a(14) =715756932697
External references
- oeis: A000402