Helen G. Grundman
Helen G. Grundman is a professor of mathematics at Bryn Mawr College.
In 1994, Grundman proved that sequences of more than 2n consecutive Harshad numbers in base n do not exist.
References
- Grundman, H. G. (1994). "Sequences of consecutive n-Niven numbers". Fibonacci Quarterly 32 (2): 174–175. ISSN 0015-0517. Zbl 0796.11002.