HTML Code

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Powers of 11 (Input)</title>
</head>
<body>
  <pre id="out"></pre>
  <script>
    const n = parseInt(prompt("Enter number of rows:"), 10);
    let res = 1;
    let result = "";

    if (!Number.isFinite(n) || n < 1) {
      result = "Please enter a positive integer.";
    } else {
      for (let i = 0; i < n; i++) {
        result += res + "\n";
        res *= 11;
      }
    }

    document.getElementById("out").textContent = result;
  </script>
</body>
</html>

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JavaScript Number Pattern 48 (Try It — User Input)