how to for loop in between a html tag

Question

how to change text of button according to for loop

my code is like this

<%for(int i=1;i<14;i++)

{%>

<asp:Button runtat="server" id="btn1" text="i want value of i here" commandargument="i want value of i here too/>

<%if(i%5==0)

{%>

</br> every five number a line braeak

<%}%>-----if block end

<%}%>for loop end