r"""
Counting
========

- :ref:`sage.databases.oeis`
- :ref:`sage.combinat.sloane_functions`
- :ref:`sage.combinat.expnums`
- :ref:`sage.combinat.q_analogues`, :ref:`sage.combinat.q_bernoulli`
- :ref:`sage.combinat.binary_recurrence_sequences`
- :ref:`sage.combinat.combinat`

.. TODO::

   Mention sage/combinat/degree_sequences?

"""
