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A098628 Consider the family of multigraphs enriched by the species of parts. Sequence gives number of those multigraphs with n edges. 0
1, 2, 12, 128, 2224, 56000, 1880832, 79985792, 4161468928, 258415579648, 18793653411840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.

LINKS

Table of n, a(n) for n=0..10.

G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004. [Cached copy, with permission]

CROSSREFS

Sequence in context: A097629 A259267 A014235 * A123553 A079199 A303926

Adjacent sequences:  A098625 A098626 A098627 * A098629 A098630 A098631

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Oct 26 2004

STATUS

approved

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Last modified April 7 08:50 EDT 2020. Contains 333300 sequences. (Running on oeis4.)