Print the series 1,3,7,9,13,15

 var val= 1  

var flag = 2

console.log(val)

for(let k=1; k<=5; k++)

{

if(flag == 2)

{

    val = val + flag;

    console.log(val);

    flag = 4;

}

if(flag == 4)

{

   val = val + flag;

   console.log(val)

   flag = 2;

}

}