第一个术语的插图,按零件数量、零件尺寸和零件最小颜色等排序。
:
a(1)=1:
{{1}}:
a(2)=6=3+3:
{{1,1}},{{1,2}},{{2,2}},
{{1},{1}},{{1},{2}},{{2},{2}}
:
a(3)=38=10+18+10:
{{1,1,1}},{{1,1,2}},{{1,1,3}},{{1,2,2}},{{1,2,3}},{{1,3,3}},
{{2,2,2}},{{2,2,3}},{{2,3,3}},{{3,3,3}},
{{1},{1,1}},{{1},{1,2}},{{1},{1,3}},{{1},{2,2}},{{1},{2,3}},{{1},{3,3}},
{{2},{1,1}},{{2},{1,2}},{{2},{1,3}},{{2},{2,2}},{{2},{2,3}},{{2},{3,3}},
{{3},{1,1}},{{3},{1,2}},{{3},{1,3}},{{3},{2,2}},{{3},{2,3}},{{3},{3,3}},
{{1},{1},{1}},{{1},{1},{2}},{{1},{1},{3}},{{1},{2},{2}},{{1},{2},{3}},{{1},{3},{3}},
{{2},{2},{2}},{{2},{2},{3}},{{2},{3},{3}},{{3},{3},{3}}}}