[seqfan] Wanted: parents of lucky numbers

[Russ Cox]

> FYI, there is an article about lucky numbers by Ivars Peterson at
> http://www.sciencenews.org/sn_arc97/9_6_97/mathland.htm

It's worth noting that this description of lucky numbers is flawed.
In his example, he misses the step where every seventh number gets
crossed out.

http://www.astro.virginia.edu/~eww6p/math/LuckyNumber.html is a 
more accurate overview, although shorter.

Russ