Triangle read by rows: T(n,k) is the number of permutations of [n] having k consecutive ascending pairs (0 <= k <= n-1).
A010027
Triangle read by rows: T(n,k) is the number of permutations of [n] having k consecutive ascending pairs (0 <= k <= n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =3a(6) =1a(7) =3a(8) =9a(9) =11a(10) =1a(11) =4a(12) =18a(13) =44a(14) =53a(15) =1a(16) =5a(17) =30a(18) =110a(19) =265a(20) =309a(21) =1a(22) =6a(23) =45a(24) =220a(25) =795a(26) =1854a(27) =2119a(28) =1a(29) =7
External references
- oeis: A010027