对于n=1,1/2=1/2;
对于n=2,2/3=1/3+1/3;
对于n=3,4/5=1/2+1/4+1/20和4/5=1/2+1/5+1/10;
对于n=4,8/11=1/2+1/6+1/22+1/66;
对于n=5,16/17=1/2+1/3+1/17+1/34+1/51;
对于n=6,77/79=1/2+1/3+1/8+1/79+1/474+1/632;
对于n=7,732/733=1/2+1/3+1/7+1/45+1/7330+1/20524+1/26388;
对于n=8,27538/27539=1/2+1/3+1/7+1/43+1/1933+1/14893663+1/1927145066572824+1/21829231672162931784;等。