LaTeX math snippets (see LaTeX fragments) can be displayed in two
different ways on HTML pages. The default is to use the
MathJax, which should work out of the box
with Org^{130}^{131}. Some MathJax display options can
be configured via `org-html-mathjax-options`

, or in the buffer. For
example, with the following settings,

#+HTML_MATHJAX: align: left indent: 5em tagside: left

equation labels are displayed on the left margin and equations are five em from the left margin.

See the docstring of `org-html-mathjax-options`

for all supported
variables. The MathJax template can be configure via
`org-html-mathjax-template`

.

If you prefer, you can also request that LaTeX fragments are processed into small images that will be inserted into the browser page. Before the availability of MathJax, this was the default method for Org files. This method requires that the dvipng program, dvisvgm or ImageMagick suite is available on your system. You can still get this processing with

#+OPTIONS: tex:dvipng

#+OPTIONS: tex:dvisvgm

or

#+OPTIONS: tex:imagemagick

By default, Org loads MathJax from jsDelivr, as recommended in Getting Started with MathJax Components.

Please note that exported formulas are part of an HTML
document, and that signs such as ‘`<`’, ‘`>`’, or ‘`&`’ have special
meanings. See MathJax TeX and LaTeX in HTML documents.