Number of tree-factorizations of Heinz numbers of integer partitions of n.

A331685

Number of tree-factorizations of Heinz numbers of integer partitions of n.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =23a(4) =69a(5) =261a(6) =943a(7) =3815a(8) =15107a(9) =63219a(10) =262791a(11) =1130953a(12) =4838813a(13) =21185125a(14) =92593943a(15) =411160627a(16) =1823656199a(17) =8186105099a(18) =36728532951a(19) =166310761655

External references