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A069674
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Triangular numbers whose digit permutations yield at least two further triangular numbers.
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3
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120, 210, 1035, 2080, 4095, 4560, 4950, 5460, 9045, 13530, 15400, 17020, 17205, 17578, 19306, 20100, 20503, 20706, 23005, 30135, 30628, 36046, 37401, 40186, 43071, 43660, 46360, 46971, 50721, 51040, 52003, 53301, 60031, 63190, 66430
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OFFSET
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1,1
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LINKS
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EXAMPLE
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120 yields 21 and 210; 210 yields 21 and 120.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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