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A116153
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Numbers n such that n concatenated with n-1 gives the product of two numbers which differ by 9.
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5
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13, 41, 653, 2287, 2723, 5491, 23240971, 26823191, 60249661, 1841968537, 2009317771, 3044234903, 3258336353, 8166731261, 9481619237, 1281071245505271100098621541, 1551605670846640136726379653
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