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Search: id:A051791
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| A051791 |
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Numbers that are unchanged when turned upside down, when written in a font in which 7 looks like upside-down 2). |
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1
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| 1, 8, 11, 27, 69, 88, 101, 111, 181, 207, 217, 287, 609, 619, 689
(list; graph; listen)
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