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A119066
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Numbers k such that the k-th triangular number contains only digits {0,3,7}.
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2
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2, 24, 37, 77, 775, 3943940, 7844837, 124153399, 393193023940, 78406253666877, 256907649052235, 1240997802874797
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OFFSET
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1,1
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COMMENTS
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Next term exceeds 1.4*10^16.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,base,more
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AUTHOR
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STATUS
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approved
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