Combinations

function numb(input){
  let n = Number(input.shift());
  let counter = 0;

  for(let x1 = 0;x1 <= n;x1++){
     for(let x2 = 0;x2 <= n;x2++){
        for(let x3 = 0;x3 <= n;x3++){
           for(let x4 = 0;x4 <= n;x4++){
              for(let x5 = 0;x5 <= n;x5++){
               let sum = x1 + x2 + x3 + x4 + x5;
               if(sum === n){
                  counter++;
                 }

              }
           }
        }
     }
  }


  console.log(counter);
}

numb([5]);