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A004290
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Least positive multiple of n that when written in base 10 uses only 0's and 1's.
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19
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0, 1, 10, 111, 100, 10, 1110, 1001, 1000, 111111111, 10, 11, 11100, 1001, 10010, 1110, 10000, 11101, 1111111110, 11001, 100, 10101, 110, 110101, 111000, 100, 10010, 1101111111, 100100, 1101101, 1110, 111011, 100000, 111111, 111010
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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COMMENTS
| a(n) = min{A007088(k): k > 0 and A007088(k) mod n = 0}. [Reinhard Zumkeller, Jan 10 2012]
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LINKS
| T. D. Noe, Table of n, a(n) for n = 0..1999 (from Ed Pegg link)
Ed Pegg Jr., 'Binary' Puzzle
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PROG
| (Haskell)
a004290 0 = 0
a004290 n = head [x | x <- tail a007088_list, mod x n == 0]
-- Reinhard Zumkeller, Jan 10 2012
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CROSSREFS
| Cf. A004283-A004289, A078241-A078248, A079339, A096681-A096688.
Sequence in context: A004284 A119484 A100751 * A159551 A105991 A103581
Adjacent sequences: A004287 A004288 A004289 * A004291 A004292 A004293
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KEYWORD
| nonn,base,nice
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AUTHOR
| David W. Wilson (davidwwilson(AT)comcast.net)
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