President's Choice: Happy Integers
January 2007, Volume 100, Issue 5, Page 308
The favorite article of a
past NCTM president chosen for reprise as part of the celebration of the
journal's 100th volume year. This article is about cheery sequences and happy numbers,
with an opportunity to discuss wording of conjectures and to explore proofs.
Includes a computer program in BASIC.
Connections / Applications
Numbers and Operations