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A119056
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Numbers n such that the n-th triangular number contains only digits {0,2,8}.
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2
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7, 40, 64, 400, 632, 1287, 4000, 40000, 126712, 209775, 400000, 646232, 663367, 4000000, 40000000, 75897600, 213645607, 400000000, 4000000000, 12713841912, 40000000000, 400000000000, 749506541784, 4000000000000, 20397451214712
(list; graph; refs; listen; history; internal format)
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