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A176430
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Integers equal to sqrt(A174864/4).
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1
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3, 21, 903, 1631721, 5325028475403, 56711856527710922180500221, 82753323662259982099234097722219590008756576353188748920925694383267934319786203404455994065868822592721
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OFFSET
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1,1
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COMMENTS
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a(n) is divisible by 3.
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LINKS
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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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