For the first subsection ("triangular array"), it's not that useful, but for the second one, as shown above (arguably the most frequent case), it certainly is, and maybe also for the last section, viz.
<h2><a href="/A002260" id="triangle">A002260</a> as an upper right triangle</h2>
If we added an "id" in the section titles of the
/table
pages, as for example in https://oeis.org/A002260/table,it would be possible to link directly to a given formatting, using https://oeis.org/A002260/table#square
For the first subsection ("triangular array"), it's not that useful, but for the second one, as shown above (arguably the most frequent case), it certainly is, and maybe also for the last section, viz.