Data update

Task/Square-free-integers/JavaScript/square-free-integers.js

@@ -0,0 +1,21 @@
+function is_squarefree(n) {
+  for (let i = 2; i <= Math.sqrt(n); i++) {
+    if (Number.isInteger(n / (i ** 2))) {
+      return false;
+    }
+  }
+  return true;
+}
+
+for (const n of [1, 10 ** 12 + 1]) {
+  console.log([...Array(145).keys()].map(x => x + n).filter(is_squarefree).join(" "));
+}
+
+let sqf = [];
+for (let i = 1; i <= 1000000; i++) {
+  if (is_squarefree(i)) {
+    sqf.push(i);
+  } else if (Number.isInteger(Math.log10(i))) {
+    console.log(`There are ${sqf.length} square-free integers <=${i}`);
+  }
+}