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A078568
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Repunits concatenated with A000422, where A000422 is the concatenation of numbers from n down to 1.
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1
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11, 1121, 111321, 11114321, 1111154321, 111111654321, 11111117654321, 1111111187654321, 111111111987654321, 111111111110987654321, 111111111111110987654321, 111111111111121110987654321
(list; graph; refs; listen; history; internal format)
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