1 files changed, 5 insertions, 0 deletions
diff --git a/progs/a137.py b/progs/a137.py
new file mode 100644
index 0000000..ff0d667
--- /dev/null
+++ b/progs/a137.py
@@ -0,0 +1,5 @@
+def geometric_sum(n):
+  if n < 0:
+    return 0
+  else:
+    return 1 / (pow(2, n)) + geometric_sum(n - 1)
+\ No newline at end of file