diff --git a/sample.go b/sample.go
index 19e4721..a572bb2 100644
--- a/sample.go
+++ b/sample.go
@@ -1,19 +1,6 @@
-package main
-
-import "fmt"
-
-// fib returns a function that returns
-// successive Fibonacci numbers.
-func fib() func() int {
-	a, b := 0, 1
-	return func() int {
-		a, b = b, a+b
-		return a
+func main() {
+	for i := 0; i <= 9; i++ {
+		f := count(fact(gen(i)))
+		fmt.Println(i, "! =", f)
 	}
 }
-
-func main() {
-	f := fib()
-	// Function calls are evaluated left-to-right.
-	fmt.Println(f(), f(), f(), f(), f())
-}