@article{hrj:132, title = {Is the binomial coefficient $2n \choose n$ square free?}, author = {G Velammal}, url = {https://hrj.episciences.org/132}, doi = {10.46298/hrj.1995.132}, journal = {Hardy-Ramanujan Journal}, issn = {2804-7370}, volume = {Volume 18 - 1995}, eid = 1, year = {1995}, month = {Jan}, keywords = {Vaughan's identity, exponent pairs, [MATH]Mathematics [math]}, language = {English}, }