OFFSET
1,2
COMMENTS
From Robert G. Wilson v, Mar 20 2017: (Start)
For n odd, the center of the circle is in the middle of the center square and thus a(2n-1) == 1 (mod 4).
For n even, the center of the circle is at the four corners of the center 4 squares and thus a(2n) == 0 (mod 4). (End)
LINKS
Sean A. Irvine, Java program (github)
FORMULA
Conjecture: a(n) <= A124623(n) with equality in most cases. - Sean A. Irvine, Sep 03 2021
EXAMPLE
a(2)=4 because an inscribed circle in a 2 X 2 grid covers at least 50% of each of the unit squares within it.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Joe K. Crump (joecr(AT)carolina.rr.com)
EXTENSIONS
Data corrected by Sean A. Irvine, Sep 02 2021
STATUS
approved