Update all new Tasks

Task/Ludic-numbers/Python/ludic-numbers-1.py

@@ -0,0 +1,22 @@
+def ludic(nmax=100000):
+    yield 1
+    lst = list(range(2, nmax + 1))
+    while lst:
+        yield lst[0]
+        del lst[::lst[0]]
+
+ludics = [l for i,l in zip(range(2005), ludic())]
+
+print('First 25 ludic primes:')
+print(ludics[:25])
+print("\nThere are %i ludic numbers <= 1000"
+      % sum(1 for l in ludics if l <= 1000))
+print("\n2000'th..2005'th ludic primes:")
+print(ludics[2000-1: 2005])
+
+n = 250
+triplets = [(x, x+2, x+6)
+            for x in ludics
+            if x+6 < n and x+2 in ludics and x+6 in ludics]
+print('\nThere are %i triplets less than %i:\n  %r'
+      % (len(triplets), n, triplets))

Task/Ludic-numbers/Python/ludic-numbers-2.py

@@ -0,0 +1,12 @@
+def ludic(nmax=64):
+    yield 1
+    taken = []
+    while True:
+        lst, nmax = list(range(2, nmax + 1)), nmax * 2
+        for t in taken:
+            del lst[::t]
+        while lst:
+            t = lst[0]
+            taken.append(t)
+            yield t
+            del lst[::t]