Number T(n,k) of permutations p of [n] such that 0p has a nonincreasing jump sequence beginning with k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A291684
Number T(n,k) of permutations p of [n] such that 0p has a nonincreasing jump sequence beginning with k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =2a(9) =2a(10) =0a(11) =1a(12) =5a(13) =5a(14) =5a(15) =0a(16) =1a(17) =9a(18) =12a(19) =14a(20) =16a(21) =0a(22) =1a(23) =17a(24) =36a(25) =36a(26) =47a(27) =52a(28) =0a(29) =1
External references
- oeis: A291684