Number of sets of nonempty sets whose multiset union is a strongly normal multiset of size n.
A318402
Number of sets of nonempty sets whose multiset union is a strongly normal multiset of size n.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =74a(5) =311a(6) =1401a(7) =6913a(8) =36376a(9) =205421a(10) =1228288a(11) =7786802a(12) =51937607a(13) =364250763a(14) =2673314121a(15) =20504809133a(16) =163844631872
External references
- oeis: A318402