Evan is pretty clever. Going by the moniker e14n, it would seem to be some kind of visual wordplay, but I've deduced the true meaning.
i18n is short for internationalization. a11y is short for accessibility. So what does e14n actually mean?
I've narrowed it down to electroreception, enterochromaffin and editorialization. Considering that Evan started releasing software under that moniker beginning with pump.io I've concluded that it is... all three!
It is obvious in reference to using a "stream server that does most of what people really want from a social network" to evolve folks' ability to perceive and digest the opinions of their peers being presented as fact on the internet.
Well played Evan, well played.