OFFSET
2,2
COMMENTS
a(5) is also the number of edge covers in the 2-Keller graph. - Eric W. Weisstein, Mar 21 2018
LINKS
Eric Weisstein's World of Mathematics, Edge Cover
Eric Weisstein's World of Mathematics, Folded Cube Graph
Eric Weisstein's World of Mathematics, Keller Graph
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Eric W. Weisstein, Dec 24 2017
EXTENSIONS
a(5)-a(6) from Andrew Howroyd, Dec 27 2017
STATUS
approved