diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..413eee1 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,13 @@
 export function fibonacci(value) {
   // implementar logica aqui
+  let fibo = [];
+  let i = 0;
+  for (i = 0 ; i <= value; i++) {
+    if (i < 2)
+      fibo[i] = i;
+    else 
+      fibo[i] = fibo[i-1] + fibo[i-2];                        
+  }
+  return fibo[value];
   
 }
\ No newline at end of file