A297004 Number of edge covers in the n-Andrásfai graph.

1, 11, 1697, 2237073, 22753082339, 1743551025220123, 1013387130792201109033, 4531716216332697683659593705, 157988515580943223822696160770242451

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Eric Weisstein's World of Mathematics, Andrásfai Graph

Eric Weisstein's World of Mathematics, Edge Cover

Crossrefs

Cf. A290702.

Sequence in context: A027880 A222841 A287035 * A308155 A222874 A028453

Adjacent sequences: A297001 A297002 A297003 * A297005 A297006 A297007

Keyword

nonn,more

Author

Eric W. Weisstein, Dec 23 2017

Extensions

a(5)-a(9) from Andrew Howroyd, Dec 27 2017

Status

approved