3,1
Table of n, a(n) for n=3..6.
Eric Weisstein's World of Mathematics, Matching
Eric Weisstein's World of Mathematics, Maximal Independent Edge Set
Eric Weisstein's World of Mathematics, Torus Grid Graph
Sequence in context: A219938 A271670 A098935 * A104674 A221010 A219584
Adjacent sequences: A297483 A297484 A297485 * A297487 A297488 A297489
nonn,more
Eric W. Weisstein, Dec 30 2017
a(6) from Andrew Howroyd, Dec 30 2017
approved