a(5)=1到a(8)=12个多集分区的非同构代表:
{{12}{12}} {{12}{122}} {{112}{122}} {{112}{1222}} {{1112}{1222}}
{{12}{1222}} {{12}{12222}} {{112}{12222}}
{{12}{13}{23}} {{12}{13}{233}} {{12}{122222}}
{{13}{23}{123}} {{122}{11222}}
{{12}{123}{233}}
{{12}{13}{2333}}
{{13}{112}{233}}
{{13}{122}{233}}
{{13}{23}{1233}}
{{23}{123}{123}}
{{12}{12}{34}{34}}
{{12}{13}{24}{34}}