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Search: id:A022154
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| A022154 |
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Coordination sequence for root lattice B_12. |
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+0
4
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| 1, 288, 15776, 346304, 4254912, 34792672, 210482016, 1010803584, 4047994752, 14009305760, 43023042336, 119628650560, 305908697152, 728298521184, 1630273964256, 3458692036352, 7000203482880
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OFFSET
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0,2
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REFERENCES
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R. Bacher, P. de la Harpe and B. Venkov, Series de croissance et series d'Ehrhart associees aux reseaux de racines, C. R. Acad. Sci. Paris, 325 (Series 1) (1997), 1137-1142.
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FORMULA
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a(0)=1, a(n) = ( 65344*x^11 - 179168*x^10 + 2231680*x^9 - 4643760*x^8 + 22442112*x^7 - 33057024*x^6 + 76060160*x^5 - 69575440*x^4 + 72405344*x^3 - 29758608*x^2 + 8915760*x ) / 155925. - Ralf Stephan, Apr 28 2004
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CROSSREFS
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Sequence in context: A163731 A035749 A048145 this_sequence A163007 A069329 A037946
Adjacent sequences: A022151 A022152 A022153 this_sequence A022155 A022156 A022157
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KEYWORD
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nonn
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AUTHOR
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mbaake(AT)sunelc3.tphys.physik.uni-tuebingen.de (Michael Baake)
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