code: func Seq(first, last int) []int {
  	var arr []int
  	for i := first; i <= last; i++ {
  		arr = append(arr, i)
  	}
  	return arr
  }
docs: // Seq creates a sequence of integers. It's named and used as GNU's seq.
  // Seq takes the first and the last element as arguments. So Seq(3, 5) will generate [3,4,5]