A141040 Number of graphs with 2n vertices that have an odd determinant for their adjacency matrix.

1, 4, 47, 4043, 4553432

Offset

1,2

Links

Table of n, a(n) for n=1..5.

Crossrefs

Cf. A000088, A140981.

Sequence in context: A361560 A333247 A330039 * A182102 A052105 A010293

Adjacent sequences: A141037 A141038 A141039 * A141041 A141042 A141043

Keyword

hard,more,nonn

Author

Tanya Khovanova, Aug 18 2008

Extensions

a(4)-a(5) from Andrew Howroyd, Nov 04 2017

Status

approved