1 files changed, 7 insertions, 0 deletions
diff --git a/progs/a304.py b/progs/a304.py
new file mode 100644
index 0000000..06d4c9b
--- /dev/null
+++ b/progs/a304.py
@@ -0,0 +1,7 @@
+def factorial(start,end): 
+    res = 1 
+    for i in range(start,end + 1): 
+        res *= i      
+    return res 
+def sum_of_square(n): 
+   return int(factorial(n + 1, 2 * n)  /factorial(1, n)) 
+\ No newline at end of file