An Addition Chain for which there is a Subset of members such that each member of the chain uses the largest element of which is less than the member.

**References**

Guy, R. K. ``Addition Chains. Brauer Chains. Hansen Chains.'' §C6 in
*Unsolved Problems in Number Theory, 2nd ed.* New York: Springer-Verlag,
pp. 111-113, 1994.

© 1996-9

1999-05-25