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0, 0, 0, 0, 9, 27, 63, 126, 252, 504, 1017, 2043, 4095, 8190, 16380, 32760, 65529, 131067, 262143, 524286, 1048572, 2097144, 4194297, 8388603, 16777215, 33554430, 67108860, 134217720, 268435449, 536870907, 1073741823, 2147483646
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OFFSET
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0,5
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LINKS
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Table of n, a(n) for n=0..31.
Index entries for linear recurrences with constant coefficients, signature (3,-2,-1,3,-2).
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FORMULA
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a(n) = 9 *A153234(n). G.f. 9*x^4 / ( (x-1)*(2*x-1)*(1+x)*(x^2-x+1) ). - R. J. Mathar, Dec 17 2012
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CROSSREFS
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Sequence in context: A112524 A254622 A271990 * A256327 A011923 A029875
Adjacent sequences: A153234 A153235 A153236 * A153238 A153239 A153240
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KEYWORD
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nonn,easy
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AUTHOR
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Paul Curtz, Dec 21 2008
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EXTENSIONS
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Definition corrected by Omar E. Pol, Dec 24 2008
Edited by N. J. A. Sloane, Dec 31 2008
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STATUS
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approved
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