1 files changed, 3 insertions, 0 deletions
diff --git a/progs/a717.py b/progs/a717.py
new file mode 100644
index 0000000..427cd29
--- /dev/null
+++ b/progs/a717.py
@@ -0,0 +1,3 @@
+def tn_ap(a,n,d):
+  tn = a + (n - 1) * d
+  return tn
+\ No newline at end of file