There are various continued fractions for e that were well-known: https://en.wikipedia.org/w/index.php?title=List_of_representations_of_e&oldid=887813748#As_a_c

There are various continued fractions for e that were well-known: https://en.wikipedia.org/w/index.php?title=List_of_representations_of_e&oldid=887813748#As_a_continued_fraction https://en.wikipedia.org/w/index.php?title=List_of_represent... But the one found by this machine seems to be new; see the paper: http://www.ramanujanmachine.com/paper http://www.ramanujanmachine.com/paper (or with some comments at https://fermatslibrary.com/s/the-ramanujan-machine-automatically-generated-conjectures-on-fundamental-constants https://fermatslibrary.com/s/the-ramanujan-machine-automatic... )