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A296916
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List of coefficients of reduced chromatic polynomial of icosahedron, highest order terms first.
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2
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OFFSET
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1,2
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COMMENTS
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These are the coefficients when the chromatic polynomial of the icosahedron (see A296917) is divided by x*(x-1)*(x-2)*(x-3).
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REFERENCES
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N. Biggs, Algebraic Graph Theory, 2nd ed. Cambridge University Press, 1993. See p. 69.
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LINKS
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EXAMPLE
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The reduced chromatic polynomial is x^8-24*x^7+260*x^6-1670*x^5+6999*x^4-19698*x^3+36408*x^2-40240*x+20170.
Multiplying by x*(x-1)*(x-2)*(x-3) and expanding we get the chromatic polynomial for the icosahedron, which is x^12 - 30*x^11 + 415*x^10 - 3500*x^9 + 20023*x^8 - 81622*x^7 + 241605*x^6 - 517360*x^5 + 780286*x^4 - 782108*x^3 + 463310*x^2 - 121020*x.
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CROSSREFS
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KEYWORD
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sign,fini,full
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AUTHOR
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STATUS
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approved
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