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A119041
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Triangular numbers composed of digits {0,1,6}.
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2
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1, 6, 10, 66, 666, 10011, 16110, 66066, 600060, 6601161, 10006101, 11066160, 660061611, 1001661661, 1061660160, 1100016060, 1660061010, 1001000010660, 1066006600011, 10010000160006, 106001000601616, 60660116660011611, 1660616006066010601060060
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OFFSET
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1,2
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LINKS
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FORMULA
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MATHEMATICA
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Rest[Select[FromDigits/@Tuples[{0, 1, 6}, 17], OddQ[Sqrt[8#+1]]&]] (* Harvey P. Dale, Jan 14 2017 *)
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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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