Table of n, a(n) for n=1..10.
Erich Friedman, Circles in Ellipses (It is unclear from this page which results are proved and which are just the best known.)
Sequence in context: A120191 A059983 A177106 * A037366 A047551 A010755
Adjacent sequences: A269098 A269099 A269100 * A269102 A269103 A269104
Leonid Broukhis, Feb 19 2016