Numberphile’s Proof for the Sum 1+2+3+... Jonathan Bartlett Asatur Zh Khurshudyan DOI: https://doi.org/10.33014/issn.2640-5652.1.1.bartlett.3 Abstract This letter discusses the claim suggested by mathematical vlogger Numberphile as to whether the sequence 1 + 2 + 3 + ... is equal to -1/12. PDF Published 2018-12-13 Issue Vol 1 No 1 (2019): Issue 1:1 Section Letters