0,2

G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.

Table of n, a(n) for n=0..5.

Sequence in context: A159513 A012730 A012734 * A066152 A112862 A094484

Adjacent sequences: A099683 A099684 A099685 * A099687 A099688 A099689

nonn

N. J. A. Sloane, Oct 26 2004

approved