How to display first N natural numbers, knowing the divisors in Lisp

Question

Display first N natural numbers, the divisors of which are only 2, 3 and 7. I wrote something like that. I am a beginner in Lisp. Thank you!

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Answer 1

Because I just had some time, you could have a look at this. Might not be the perfect solution but should be a good starting point for a beginner. Check out the books in the info tab to get into the syntax etc.

(defun divisible-by (n m)
   "Returns T if N is evenly divisible by M."
   (zerop (mod n m)))

(defun numbers (n)
   "Print all number upto N which are divisible by 2, 3 and 7."
    (loop
       for i from 1 upto N
       if (and (divisible-by i 2) (divisible-by i 3) (divisible-by i 7))
         do (format t "~D~%" i)))