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A119136
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Triangular numbers composed of digits {1,5,8}.
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2
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1, 15, 55, 5151, 8515, 581581, 885115, 1188111, 11188815, 51151555, 81581151, 88851115, 851585815, 8888511115, 888885111115, 88888851111115, 8888888511111115, 888888885111111115, 5885188811851888815
(list; graph; refs; listen; history; internal format)
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