a(3)=3到a(7)=15个多集分区的非同构代表:
{{111}} {{1111}} {{11111}} {{111111}} {{1111111}}
{{122}} {{1222}} {{11222}} {{112222}} {{1112222}}
{{1}{11}} {{1}{111}} {{12222}} {{122222}} {{1122222}}
{{1}{1111}} {{122333}} {{1222222}}
{{11}{111}} {{1}{11111}} {{1223333}}
{{11}{1111}} {{1}{111111}}
{{1}{11222}} {{11}{11111}}
{{11}{1222}} {{111}{1111}}
{{112}{222}} {{1}{112222}}
{{122}{222}} {{11}{12222}}
{{2}{11222}} {{112}{2222}}
{{22}{1222}} {{122}{2222}}
{{1}{11}{111}} {{2}{112222}}
{{22}{12222}}
{{1}{11}{1111}}