A060017 Number of n-feedback edge set obstructions.

2, 7, 27, 120, 642, 3767

Offset

1,1

Links

Table of n, a(n) for n=1..6.

M. J. Dinneen, K. Cattell and M. R. Fellows, Forbidden minors to graphs with small feedback sets, Discrete Math., 230 (2001), 215-252.

Crossrefs

Sequence in context: A036783 A368762 A150645 * A211475 A213226 A058800

Adjacent sequences: A060014 A060015 A060016 * A060018 A060019 A060020

Keyword

nonn

Author

N. J. A. Sloane, Mar 17 2001

Status

approved