1,5
Table of n, a(n) for n=1..7.
Eric Weisstein's World of Mathematics, Fiveleaper Graph
Eric Weisstein's World of Mathematics, Matching
Eric Weisstein's World of Mathematics, Maximal Independent Edge Set
Sequence in context: A217271 A168488 A070904 * A159427 A340590 A017416
Adjacent sequences: A308306 A308307 A308308 * A308310 A308311 A308312
nonn,more
Eric W. Weisstein, May 19 2019
approved