Triangle of numbers read by rows: T(n,k) = number of permutations sigma of (1,2,...,n) with n - {length of longest increasing subsequence in sigma} = k (0<=k<=n-1).
A126065
Triangle of numbers read by rows: T(n,k) = number of permutations sigma of (1,2,...,n) with n - {length of longest increasing subsequence in sigma} = k (0<=k<=n-1).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =1a(6) =1a(7) =9a(8) =13a(9) =1a(10) =1a(11) =16a(12) =61a(13) =41a(14) =1a(15) =1a(16) =25a(17) =181a(18) =381a(19) =131a(20) =1a(21) =1a(22) =36a(23) =421a(24) =1821a(25) =2332a(26) =428a(27) =1a(28) =1a(29) =49
External references
- oeis: A126065