OFFSET
1,2
COMMENTS
LINKS
Andrew Howroyd, Table of n, a(n) for n = 1..25
Eric Weisstein's World of Mathematics, Independent Edge Set
Eric Weisstein's World of Mathematics, Matching
Eric Weisstein's World of Mathematics, Triangular Grid Graph
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Mar 06 2016
STATUS
approved