Initial data commit

Task/Fusc-sequence/Vala/fusc-sequence.vala

@@ -0,0 +1,26 @@
+int fusc(int n) {
+  if (n == 0 || n == 1)
+    return n;
+  else if (n % 2 == 0)
+    return fusc(n / 2);
+  else
+    return fusc((n - 1) / 2) + fusc((n + 1) / 2);
+}
+
+void main() {
+  print("The first 61 fusc numbers:\n");
+  for (int i = 0; i < 61; i++)
+    print(@"$(fusc(i)) ");
+  print("\n\nThe fusc numbers whose lengths are greater than those of previous fusc numbers:\n");
+  print("        n   fusc(n)\n");
+  print("-------------------\n");
+  var max_length = 0;
+  for (int i = 0; i < 700000; i++) {
+    var f = fusc(i);
+    var length = f.to_string().length;
+    if (length > max_length) {
+      max_length = length;
+      print("%9d %9d\n", i, f);
+    }
+  }
+}