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Related software and databases

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There is a number of OEIS-related software projects and derived databases, among them:

Other mathematical databases

Unauthorized copies and proxy servers

From time to time pages appear in the Internet which have almost the same look and feel as the original OEIS pages, but which are served from a different domain, mostly by the aid of a so-called proxy server. Such sites often wrap the original OEIS pages with some advertisement.

Such sites have the potential to grab user identities and passwords (phishing sites). OEIS users should always make sure that they log into the system with the URL https://oeis.org/login only.