パターン
1  連番
2  九九の表
3  文字列の結合
4  おもしろ計算
5  パスカルの三角形

1  連番

For[i=0,i<=9,i++,
  Print[Table[i*10+j,{j,1,10}]]]

Table[Table[i*10+j,{j,1,10}],{i,0,9}]//MatrixForm

2  九九の表

Table[Table[i*j,{j,1,10}],{i,1,10}]//MatrixForm

3  文字列の結合

m={" ","K","S","T","N","H","M"};
n={"A","I","U","E","O"};

Table[Table[StringJoin[m[[j]],n[[i]]],{j,1,7}],
            {i,1,5}]//MatrixForm

StringJoin["やまぐち","大学"]
"山口"<>"だいがく"

4  おもしろ計算

For[n=0,n<=8,n++,
   a=Sum[10^i,{i,0,n}];
   Print[a,"×",a,"=",a a]]

5  パスカルの三角形

pascal[n_]:=Table[Binomial[n,i],{i,0,n}];
ColumnForm[Table[pascal[n],{n,1,10}],Center]