Contact

Email support@blueskua.com. One person reads it, so expect a reply within a couple of working days.

What to include

A factual correction

Say which page, quote the sentence, and point at a source if you have one. Corrections take priority over everything else in the inbox — a number site that states something false has a real problem.

A generator request

Describe the sequence or format and, ideally, link to an OEIS entry or a specification. Most of what is on the site started as a request.

A bug

Paste the page URL. Because every setting lives in the address bar, that link alone usually reproduces the problem exactly. Mention your browser and whether JavaScript or storage is restricted.

A translation fix

If a translated string reads wrong in your language, send the page URL, the wording you saw and what it should say. Corrections to translations are applied as quickly as factual ones.

Privacy and data requests

To ask what we hold about you, or to have it deleted, email the same address with the subject Data request. See the privacy policy for what is actually stored — it is very little.