C# Simple Loop Program example to print characters

Simple Loop Problem to Print A B D H P
Problem Statement:Write a program using for loop which prints the following output. (You have to find a pattern to print alphabetics in this order)A B D H P
Solution:
static void Main(string[] args)
{
int i,j,ch=0,n;
Console.Write("A ");
for (i = 1; i <= 4; i++)
{
n = 1;
for (j = 1; j <= i; j++)
{
n = n * 2;
ch = 64 + n;
}
Console.Write((char)ch + " ");
}

Console.RdLine();
}