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A167035
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Squares that remain squares if prefixed with a 1.
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4
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225, 5625, 22500, 562500, 2250000, 5405625, 23765625, 56250000, 225000000, 540562500, 2127515625, 2376562500, 5625000000, 22500000000, 54056250000, 58503515625, 212751562500, 237656250000, 562500000000, 2250000000000, 5405625000000, 5850351562500
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OFFSET
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1,1
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LINKS
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EXAMPLE
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225 = 15^2 is a square and becomes the square 1225 = 35^2 if a 1 is attached in front.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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