1,1
Table of n, a(n) for n=1..10.
Eric Weisstein's World of Mathematics, Andrasfai Graph
Eric Weisstein's World of Mathematics, Independent Edge Set
Eric Weisstein's World of Mathematics, Matching
Sequence in context: A207571 A351331 A278070 * A088690 A118805 A198001
Adjacent sequences: A292425 A292426 A292427 * A292429 A292430 A292431
nonn,more
Eric W. Weisstein, Sep 30 2017
approved