Triangle of number of functions in a size n set for which the sequence of composition powers ends in a length k cycle.

A222029

Triangle of number of functions in a size n set for which the sequence of composition powers ends in a length k cycle.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =1a(4) =16a(5) =9a(6) =2a(7) =125a(8) =93a(9) =32a(10) =6a(11) =1296a(12) =1155a(13) =480a(14) =150a(15) =24a(16) =20a(17) =16807a(18) =17025a(19) =7880a(20) =3240a(21) =864a(22) =840a(23) =262144a(24) =292383a(25) =145320a(26) =71610a(27) =24192a(28) =26250a(29) =720

External references