OFFSET
1,1
COMMENTS
Empirically, 6*sqrt(3) <= a(n)/n <= 12. The lower bound is provably tight.
a(n) == 0 (mod 4).
REFERENCES
Mohammad K. Azarian, Circumradius and Inradius, Problem S125, Math Horizons, Vol. 15, Issue 4, April 2008, p. 32. Solution published in Vol. 16, Issue 2, November 2008, p. 32.
LINKS
David W. Wilson, Table of n, a(n) for n = 1..10000
CROSSREFS
KEYWORD
nonn
AUTHOR
David W. Wilson, Jun 17 2006
STATUS
approved