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A132477
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Row sums of triangle A132476.
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2
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1, 4, 12, 24, 48, 96, 192, 384, 768, 1536, 3072, 6144, 12288, 24576, 49152, 98304, 196608, 393216, 786432, 1572864, 3145728, 6291456, 12582912, 25165824, 50331648, 100663296, 201326592, 402653184, 805306368, 1610612736, 3221225472, 6442450944, 12884901888
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OFFSET
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0,2
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COMMENTS
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A007283 = 3*2^n: (3, 6, 12, 24, 48, ...).
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LINKS
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FORMULA
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a(0) = 1, a(1) = 4, a(n) = 3*2^n for n>1.
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EXAMPLE
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a(3) = 24 = sum of row 3 terms of triangle A132476: (3 + 7 + 13 + 1).
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MATHEMATICA
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Join[{1, 4}, 3 2^Range[2, 40]] (* or *) Join[{1, 4}, NestList[2#&, 12, 40]] (* Harvey P. Dale, May 31 2017 *)
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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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