I have an R script which outputs a small table in the form of a
dataframe. In org-babel, this dataframe is not displayed as an org
table but simply as text laid out as it would be in an R session.

When I export the output to html, I do not get an html table but only
text. How do I make org-babel show a table instead of plain text?

For example, take a simple code block like:

#+BEGIN_SRC R :results output :exports both :session y
 x<-c(1:5)
 y<-x^2
 data.frame(x,y)
#+END_SRC


Vikas