|
|
A098288
|
|
Consider the family of multigraphs enriched by the species of linear order. Sequence gives the triangle read by rows giving coefficients of polynomials arising from enumeration of those multigraphs on n edges, arcs and loops.
|
|
0
|
|
|
1, 1, 2, 2, 14, 13, 4, 6, 102, 268, 219, 66, 8, 24, 828, 4668, 7909, 5309, 1659, 248, 16, 120, 7500, 80100, 248870, 303932, 175783, 53465, 8950, 800, 32, 720, 75240, 1411680, 7476690, 15207810, 14504410, 7361796, 2150541, 376375, 39540
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,3
|
|
REFERENCES
|
G. Paquin, Dénombrement de multigraphes enrichis, Mémoire, Math. Dept., Univ. Québec à Montréal, 2004.
|
|
LINKS
|
|
|
EXAMPLE
|
1, x+2x^2, 2x+14x^2+13x^3+4x^4, 6x+102x^2+268x^3+219x^4+66x^5+8x^6, 24x+828x^2+4668x^3+7909x^4+5309x^5+1659x^6+248x^7+16x^8, ...
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,tabf
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|