Data commit

Task/Van-Eck-sequence/11l/van-eck-sequence.11l

@@ -0,0 +1,18 @@
+F van_eck(c)
+   [Int] r
+   V n = 0
+   V seen = [0]
+   V val = 0
+   L
+      r.append(val)
+      I r.len == c
+         R r
+      I val C seen[1..]
+         val = seen.index(val, 1)
+      E
+         val = 0
+      seen.insert(0, val)
+      n++
+
+print(‘Van Eck: first 10 terms:   ’van_eck(10))
+print(‘Van Eck: terms 991 - 1000: ’van_eck(1000)[(len)-10..])