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A291779
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a(n) = 2^n - 2^floor(2n/3).
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6
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0, 1, 2, 4, 12, 24, 48, 112, 224, 448, 960, 1920, 3840, 7936, 15872, 31744, 64512, 129024, 258048, 520192, 1040384, 2080768, 4177920, 8355840, 16711680, 33488896, 66977792, 133955584, 268173312, 536346624, 1072693248, 2146435072, 4292870144, 8585740288, 17175674880, 34351349760, 68702699520
(list;
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listen;
history;
text;
internal format)
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OFFSET
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0,3
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LINKS
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FORMULA
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MAPLE
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MATHEMATICA
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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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