An educational programming language created in 1967 by Wally Feurzeig, Seymour Papert and Cynthia Solomon. Its 'turtle' drew lines on screen as children gave it commands.
A lot of generative artists of my generation grew up in public schools learning Logo and making generative art in class.
Casey Reas, Casey Reas on the History of Generative Art - Part 1
I think Logo was an early seed of, “Yeah, we're learning procedural thinking, we're learning logic, but we're also making visual art at the same time.”
Casey Reas, Casey Reas on the History of Generative Art - Part 1