let n
let suma = 0
function sumarImpar (n){
for(let i = 1 , impar = 1 ; i <= n ; i++ , impar += 2){
suma += impar
}
return suma
}
console.log(sumarImpar(4));
bGV0IG4KbGV0IHN1bWEgPSAwCmZ1bmN0aW9uIHN1bWFySW1wYXIgKG4pewoJZm9yKGxldCBpID0gMSAsIGltcGFyID0gMSA7IGkgPD0gbiA7IGkrKyAsIGltcGFyICs9IDIpewoJCXN1bWEgKz0gaW1wYXIKCX0KCXJldHVybiBzdW1hCn0KY29uc29sZS5sb2coc3VtYXJJbXBhcig0KSk7