A182131 - OEIS

%I #11 Jun 24 2019 02:13:05

%S 0,4,6,8,11,13,17,21,24,27,31,37,41,46,51

%N Largest group of fireflies on a 15 X 15 board for which no pair ever converges.

%C I have only seen the answer, not the question, so the details of the problem are not clear to me.

%H Ian Stewart, <a href="https://www.jstor.org/stable/26058103">The Synchronicity of Firefly Flashing</a>, Scientific American, Vol. 280, No. 3, March 1999, pp. 104-106.

%H Ian Stewart, <a href="https://www.jstor.org/stable/26058682">Mathematical Recreations Column</a>, Scientific American, Vol. 282, No. 4, April 2000, p. 113. (Reader Feedback, reporting on results obtained by Cindy Eisner of Zichron Yaacov, Israel, answering a question raised in the March 1999 column on "The Synchronicity of Firefly Flashing").

%K nonn,fini,full

%O 1,2

%A _N. J. A. Sloane_, Apr 14 2012