Triangle read by rows: T(n,k) is the number of permutations of [n] with exactly k increasing runs of odd length.

A097591

Triangle read by rows: T(n,k) is the number of permutations of [n] with exactly k increasing runs of odd length.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =1a(6) =0a(7) =5a(8) =0a(9) =1a(10) =6a(11) =0a(12) =17a(13) =0a(14) =1a(15) =0a(16) =70a(17) =0a(18) =49a(19) =0a(20) =1a(21) =90a(22) =0a(23) =500a(24) =0a(25) =129a(26) =0a(27) =1a(28) =0a(29) =1890

External references