Triangle read by rows: T(n,k) is the number of permutations of [n] with k increasing runs of length at least 2.
A008971
Triangle read by rows: T(n,k) is the number of permutations of [n] with k increasing runs of length at least 2.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =5a(6) =1a(7) =18a(8) =5a(9) =1a(10) =58a(11) =61a(12) =1a(13) =179a(14) =479a(15) =61a(16) =1a(17) =543a(18) =3111a(19) =1385a(20) =1a(21) =1636a(22) =18270a(23) =19028a(24) =1385a(25) =1a(26) =4916a(27) =101166a(28) =206276a(29) =50521
External references
- oeis: A008971