OFFSET
0,2
LINKS
Andrew Howroyd, Table of n, a(n) for n = 0..100
R. Euler, P. Oleksik, Z. Skupien, Counting Maximal Distance-Independent Sets in Grid Graphs, Discussiones Mathematicae Graph Theory. Volume 33, Issue 3, Pages 531-557, ISSN (Print) 2083-5892, July 2013; see also.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 17 2013
EXTENSIONS
Terms a(13) and beyond from Andrew Howroyd, Jun 10 2017
STATUS
approved