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A119132
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Triangular numbers composed of digits {1,5,6}.
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2
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1, 6, 15, 55, 66, 561, 666, 5151, 5565, 6555, 55611, 56616, 111156, 511566, 565516, 651511, 1565565, 5556111, 5566116, 5656566, 5666661, 15615666, 16666651, 51151555, 55561611, 61566156, 65111166, 116151661, 555561111, 555661116
(list; graph; refs; listen; history; internal format)
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