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A098234
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Consider the family of simple graphs. Sequence gives the triangle read by rows giving coefficients of polynomials arising from enumeration of those graphs on n edges.
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1, 1, 1, 1, 1, 4, 3, 1, 15, 29, 19, 6, 1, 30, 222, 301, 175, 55, 10, 1, 30, 1230, 3850, 4038, 2116, 650, 125, 15, 1, 5040, 40110, 78060, 66725, 31745, 9436, 1855, 245, 21, 1, 15120, 345240, 1295280, 1818075, 1312315, 570557, 163058, 32151, 4466
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,6
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REFERENCES
| G. Paquin, D'enombrement de multigraphes enrichis, M'emoire, Math. Dept., Univ. Qu'ebec `a Montr'eal, 2004.
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EXAMPLE
| 1, x^2, x^3+x^4, x^3+4x^4+3x^5+x^6, 15x^4+29x^5+19x^6+6x^7+x^8, 30x^4+222x^5+301x^6+175x^7+55x^8+10x^9+x^{10}, ...
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CROSSREFS
| Sequence in context: A109062 A112493 A010305 * A193795 A181355 A128320
Adjacent sequences: A098231 A098232 A098233 * A098235 A098236 A098237
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KEYWORD
| nonn,tabf
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004
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