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A133751
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a(n) = 2*(2+n)! + 2^n.
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1
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5, 14, 52, 248, 1456, 10112, 80704, 725888, 7257856, 79834112, 958004224, 12454043648, 174356586496, 2615348744192, 41845579792384, 711374856224768, 12804747411521536, 243290200817795072, 4865804016353542144
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OFFSET
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0,1
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LINKS
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MAPLE
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MATHEMATICA
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Table[2*(2 + n)! + 2^n, {n, 0, 20}]
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PROG
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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