Triangle read by rows: T(n,k) is the number of permutations of length n composed of exactly k overlapping adjacent runs (for n >= 1 and 1 <= k <= n).
A309993
Triangle read by rows: T(n,k) is the number of permutations of length n composed of exactly k overlapping adjacent runs (for n >= 1 and 1 <= k <= n).
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =0a(6) =1a(7) =8a(8) =2a(9) =0a(10) =1a(11) =22a(12) =26a(13) =0a(14) =0a(15) =1a(16) =52a(17) =168a(18) =42a(19) =0a(20) =0a(21) =1a(22) =114a(23) =804a(24) =692a(25) =42a(26) =0a(27) =0a(28) =1a(29) =240
External references
- oeis: A309993