Search: id:A158346
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%I A158346
%S A158346 0,0,2,356928,12099922596,49101447458720,32837837611390230,
%T A158346 6426553644633315312,533800370960514099848,23739442745823623206656,
%U A158346 657668636438409768373290,12584142706200655870739360
%N A158346 Number of n-colorings of the Deltoidal Icositetrahedral Graph.
%C A158346 The Deltoidal Icositetrahedral Graph has 26 vertices and 48 edges.
%H A158346 Weisstein, Eric W. "<a href="http://mathworld.wolfram.com/DeltoidalIcositetrahedralGraph.html">
               Deltoidal Icositetrahedral Graph</a>".
%H A158346 Weisstein, Eric W. "<a href="http://mathworld.wolfram.com/ChromaticPolynomial.html">
               Chromatic Polynomial</a>".
%H A158346 Timme, Marc; van Bussel, Frank; Fliegner, Denny; Stolzenberg, Sebastian 
               (2009) "Counting complex disordered states by efficient pattern matching: 
               chromatic polynomials and Potts partition functions", New J. Phys. 
               11 023001, doi: <a href="http://dx.doi.org/10.1088/1367-2630/11/2/
               023001">10.1088/1367-2630/11/2/023001</a>.
%F A158346 a(n) = n^26 -48*n^25 + ... (see Maple program).
%p A158346 a:= n-> n^26 -48*n^25 +1128*n^24 -17272*n^23 +193500*n^22 -1688536*n^21 
               +11930900*n^20 -70058175*n^19 +348177439*n^18 -1483953200*n^17 +5476121836*n^16 
               -17616949248*n^15 +49637181582*n^14 -122824349683*n^13 +267154252219*n^12 
               -510315163003*n^11 +853539489883*n^10 -1243277337267*n^9 +1563797242570*n^8 
               -1677188669554*n^7 +1505883391012*n^6 -1101833801576*n^5 +630811311156*n^4 
               -264660711615*n^3 +72176888542*n^2 -9563482591*n: seq (a(n), n=0..20);
%Y A158346 Sequence in context: A058435 A151606 A070694 this_sequence A018854 A139181 
               A072321
%Y A158346 Adjacent sequences: A158343 A158344 A158345 this_sequence A158347 A158348 
               A158349
%K A158346 nonn
%O A158346 0,3
%A A158346 Alois P. Heinz (heinz(AT)hs-heilbronn.de), Mar 16 2009

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