public static void fun(int n){
int [][] a = new int[n+1][n+1];
for(int i=1;i<=n;i++){
for(int j=1;j<=i;j++){
if(j==1||j==i){
a[i][j]=1;
}else{
a[i][j]=a[i-1][j-1]+a[i-1][j];//斐波那契數列應用
}
System.out.print(a[i][j]+" ");
}
System.out.println();
}
}