Not a very well-defined sequence, since peaks constantly change height for a multitude of reasons.
Table of n, a(n) for n=1..14.
Peakware World Mountain Encyclopedia, Highest Peaks
Mount Everest measured 8850 meters as of Sep 25 2001.
Sequence in context: A255078 A031592 A250010 * A031797 A202159 A216926
Adjacent sequences: A064293 A064294 A064295 * A064297 A064298 A064299
Labos Elemer, Sep 25 2001