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A119074
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Numbers n such that the n-th triangular number contains only digits {0,4,6}.
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2
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3, 11, 28, 36, 363, 944, 1095, 9596, 29680, 89895, 3634403, 2979955055, 35888885356, 9430232920411, 963784629929388363, 1149318064453932131
(list; graph; refs; listen; history; internal format)
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