Merge pull request akshitagit#171 from Jagroop2000/LeonardoNumber

Leonardo Number Implementation in Math Folder in Javascript

Author: akshitagupta15june

Maths/leonardo-number.js

@@ -0,0 +1,19 @@
+// What is Leonardo Number  ?
+// The Leonardo numbers are a sequence of numbers given by the recurrence: 
+//  if n == 0  then return 0  and if n == 1  then return 1
+// if  n > 1 then  L(n) = L(n-1) + L(n-2) + 1
+
+// For Example  if n = 3 then output is  5 (1,1,3,5)
+
+function leonardo(n)
+    {
+        let num = [];
+        num[0] = num[1] = 1;
+        for (let i = 2; i <= n; i++)
+            num[i] = num[i - 1] + num[i - 2] + 1;
+        return num[n];
+    }
+     
+    // Driver code
+ 
+console.log(leonardo(3));