Move 2015 out of the way.

2015/day-25/solution.py

@@ -0,0 +1,18 @@
+from __future__ import print_function
+
+def findCode(n):
+    modBase = 33554393
+    base = 252533
+    start = 20151125
+
+    code = start * pow(base, n - 1, modBase)
+    return code % modBase
+
+row = 2947
+col = 3029
+
+triangleNo = row + col - 1
+subTriangleSurface = ((triangleNo - 1) * triangleNo) // 2
+n = subTriangleSurface + col
+
+print(findCode(n))