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Search: id:A125134
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| A125134 |
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"Brazilian" numbers ("brasilian" in French): numbers n such that there is a natural number b with 1 < b < n-1 such that the representation of n in base b has all equal digits. |
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+0
1
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| 7, 8, 10, 12, 13, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 42, 43, 44, 45, 46, 48, 50
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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Pierre Bornsztein, "Hypermath", Vuibert, Exercise a35, p. 7.
Iberoamerican Olympiads, 1994.
Bernard SCHOTT and others, Postings to the French mathematical forum "Phorum5".
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EXAMPLE
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15 is a member since it is 33 in base 4.
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CROSSREFS
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Sequence in context: A120192 A093678 A037263 this_sequence A120175 A067529 A080113
Adjacent sequences: A125131 A125132 A125133 this_sequence A125135 A125136 A125137
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KEYWORD
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nonn
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AUTHOR
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Bernard SCHOTT (bernardschott(AT)wanadoo.fr), Jan 21 2007
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