Number T(n,k) of endofunctions on [n] with cycles of k distinct lengths; triangle T(n,k), n>=0, 0<=k<=A003056(n), read by rows.
A242027
Number T(n,k) of endofunctions on [n] with cycles of k distinct lengths; triangle T(n,k), n>=0, 0<=k<=A003056(n), read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =4a(5) =0a(6) =24a(7) =3a(8) =0a(9) =206a(10) =50a(11) =0a(12) =2300a(13) =825a(14) =0a(15) =31742a(16) =14794a(17) =120a(18) =0a(19) =522466a(20) =294987a(21) =6090a(22) =0a(23) =9996478a(24) =6547946a(25) =232792a(26) =0a(27) =218088504a(28) =160994565a(29) =8337420
External references
- oeis: A242027