1, 4, 9, 16 sequence

i'm new to java and i'm trying to make number sequence with one TextArea and one Button, using '\n' and '\t'
the result should look like this:
1 1 1
2 3 4
3 5 9
. . .
. . .
. . .
15 29 225

i got the first two columns but i need help with the third

Code java:

---

import java.applet.Applet;
import java.awt.*;
 
public class talnarod extends Applet
{
	TextArea Ttafla;
	Button Bstart;
	int i, a, b, c;
 
	public void init()
	{
		Bstart = new Button("Start");
		Ttafla = new TextArea(15,25);
 
		this.add(Bstart);
		this.add(Ttafla);
	}
	public boolean action(Event e, Object o)
	{
		if (e.target == Bstart)
		{
			for (a=1; a <= 15; a++) //here i set the length of the sequence 1 to 15
			{
				b = a+a-1; //odd numbers for second column
				c = 1; //and here i need help !!!
				Ttafla.appendText("" + a + '\t' + b + '\t' + c + '\n');
			}
			return true;
		}
		return false;
	}
}

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Quote:

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i need help with the third

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What values go in the third column? How does the value relate to the row its on?

i think it's solved ?
column3 starts at 0 before it enters the loop, than column3 + column2

Code java:

---

import java.applet.Applet;
import java.awt.*;
 
 
public class talnarod extends Applet
{
 
	TextArea Ttafla;
	Button Bstart;
	int a, b, c;
 
	public void init()
	{
 
		Bstart = new Button("Start");
		Ttafla = new TextArea(15,25);
 
		this.add(Bstart);
		this.add(Ttafla);
	}
	public boolean action(Event e, Object o)
	{
		if (e.target == Bstart)
		{
			c = 0;					
			for (a=1; a <= 15; a++)		
			{
				b = a+a-1;				
				c = c+b;				
 
				Ttafla.appendText("" + a + '\t' + b + '\t' + c + '\n');
 
			}
			return true;
		}
		return false;
	}
}

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If its solved, please mark this thread as solved.

Quote:

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Originally Posted by Norm

If its solved, please mark this thread as solved.

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how, were do i mark it as solved ?

sorry, solved problem is solved :)