;; this works fine and prints out
;; (0 0 1 3 6 10 15 21 28 36 45)
;; as it should
(def v (range 10))
(def w (lazy-cat [0] (map + v w)))
(println w)

;; this one fails
;; "Unable to resolve symbol: w1 in this context"
(let [v1 (range 10)
      w1 (lazy-cat [0] (map + v1 w1))]
  (println w1))