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A035784
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Coordination sequence for C_47 lattice.
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1
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1, 4418, 3256066, 962492226, 153103850498, 15248694346562, 1043758929078018, 52316368750163266, 2010885935139876866, 61394690471405342018, 1530842851201184782082, 31883560021717307214658, 565114979085891272326146
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OFFSET
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0,2
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LINKS
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J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (pdf).
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FORMULA
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a(n) = [x^(2n)] ((1+x)/(1-x))^47.
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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Joan Serra-Sagrista (jserra(AT)ccd.uab.es)
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EXTENSIONS
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STATUS
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approved
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