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A119091
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Triangular numbers composed of digits {0,6,9}.
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2
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6, 66, 666, 990, 66066, 69006, 600060, 609960, 690900, 969606666, 60690060606, 96960006066, 66999966009690066, 96606660096609006, 6900969009006996666, 9906090099969060666906, 6666999999969090090996690
(list; graph; refs; listen; history; internal format)
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