It’s not actually true; the OEIS is capable of storing a lot more numbers per entry in the form of a “B-file”, for example: https://oeis.org/A000127/b000127.txt

It’s not actually true; the OEIS is capable of storing a lot more numbers per entry in the form of a “B-file”, for example: https://oeis.org/A000127/b000127.txt https://oeis.org/A000127/b000127.txt. You can see the documentation on this feature here: https://oeis.org/wiki/B-files https://oeis.org/wiki/B-files. As far as I understand it, though, these B-files aren’t indexed by the search engine.