Building A Pyramid From Blocks?

I am trying to make a pyramid from blocks . I know that for example to make a bigger block from small blocks you write something like :

for(int i = 10 ;i <=1 ; i--){
for (int j= 10 ;j <= 1 ; j--) {
< statement to create block where you use both i and j to define the location of each block>
}
}

but i cant seem go grasp how to make a pyramid , so far my best effort is :

int i =10 ;
while (i >=1 ) {
for( ; i>=1 ; i-- ){
< statement to create block > }
}

At the moment visually i don't get a pyramid but it might be because of other issues and not because of the while and then a for inside it approach .

My approach is correct and if now what would be the correct one to create a pyramid from smaller blocks ?