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A119212
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Triangular numbers composed of digits {4,6,8}.
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2
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6, 66, 666, 8646, 84666, 886446, 88864446, 646686666, 6488484486, 8888644446, 888886444446, 88888864444446, 8888888644444446, 888888886444444446, 88888888864444444446, 484888446864684484446, 8888888888644444444446
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