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A119054
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Numbers n such that the n-th triangular number contains only digits {0,2,6}.
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2
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3, 11, 36, 363, 1095, 3640, 72396, 2097628, 1119484011, 11489670148, 200329741476, 666663663636, 6666633636651, 11508483829424, 203306006810436
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