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A116297
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Numbers n such that n times n+4 gives the concatenation of two numbers m and m+1.
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5
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2, 5, 43, 54, 38161, 61836, 83616, 346978, 653019, 950049, 8647553, 9534263, 8167822281, 9007920990, 9209900790, 9950000499, 4737445289219, 4990568257185, 5009431742812, 5262554710778, 8373808925583
(list; graph; refs; listen; history; internal format)
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