Number of free pure symmetric multifunctions whose leaves are a strongly normal multiset of size n.

A317654

Number of free pure symmetric multifunctions whose leaves are a strongly normal multiset of size n.

Terms

    a(0) =1a(1) =3a(2) =26a(3) =375a(4) =6696a(5) =159837a(6) =4389226a(7) =144915350a(8) =5377002075a(9) =227624621051

External references