Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with cycle descent number equal to k.
A349106
Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} with cycle descent number equal to k.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =1a(5) =15a(6) =8a(7) =1a(8) =52a(9) =51a(10) =16a(11) =1a(12) =203a(13) =312a(14) =172a(15) =32a(16) =1a(17) =877a(18) =1926a(19) =1611a(20) =561a(21) =64a(22) =1a(23) =4140a(24) =12224a(25) =14289a(26) =7744a(27) =1794a(28) =128a(29) =1
External references
- oeis: A349106