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A119082
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Numbers k such that the k-th triangular number contains only digits {0,5,7}.
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2
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10, 100, 124, 375, 1000, 10000, 100000, 1000000, 3924474, 10000000, 100000000, 387492084, 1000000000, 3885885999, 10000000000, 31804089540, 39371996915, 100000000000, 122929061474, 1000000000000, 10000000000000
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OFFSET
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1,1
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LINKS
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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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STATUS
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approved
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