Number of non-isomorphic strict multiset partitions of weight n.

Terms

a(0) =1a(1) =1a(2) =3a(3) =8a(4) =23a(5) =63a(6) =197a(7) =588a(8) =1892a(9) =6140a(10) =20734a(11) =71472a(12) =254090a(13) =923900a(14) =3446572a(15) =13149295a(16) =51316445a(17) =204556612a(18) =832467052a(19) =3455533022a(20) =14621598811a(21) =63023667027a(22) =276559371189