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A058851
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Sum of even composites up to n is palindromic.
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3
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4, 18, 58, 134, 178, 424, 598, 1344, 4254, 5998, 57630, 58740, 59998, 127404, 424414, 425344, 599998, 1273554, 4244414, 5722840, 5999998, 18886848, 42683384, 57725768, 59999998, 424650414, 578107368, 588254658, 588349340
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OFFSET
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1,1
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COMMENTS
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Sequence is 4 + 6 + 8 + 10 + 12 + 14 + ... + n.
6*10^n-2 for n >=0 are terms. - Chai Wah Wu, Feb 20 2021
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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