Tribonacci

Author: iamnishantchandra

10X/Python/String/Tribonacci.py

@@ -0,0 +1,18 @@
+#Tribonacci
+no=int(input())
+n=0
+n1=0
+n2=0
+n3=1
+if no==0:
+    n=0
+if no==1:
+    no=0
+if no>=2:
+    for i in range(no-3):
+       
+        n=n1+n2+n3
+        n1=n2
+        n2=n3
+        n3=n
+print(n)