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A116240
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n times n+9 gives the concatenation of two numbers m and m-8.
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4
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93, 454, 538, 993, 7664, 9993, 72720, 99993, 356428, 643564, 999993, 9090909, 9999993, 35294117, 64705875, 99999993, 335664328, 664335664, 684210519, 818181818, 838056673, 846153846, 866028701, 980125138, 999999993
(list; graph; refs; listen; history; internal format)
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