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Search: id:A062886
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| A062886 |
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Smallest multiple of 2n+1 with property that digits are odd and each digit is two more (mod 10) than the previous digit; or 0 if no such number exists. |
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+0
1
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| 1, 3, 5, 7, 9, 913, 91, 135, 357, 57, 357, 1357, 0, 135, 9135, 91357
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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a(7) = 91 = 13*7 has increasing odd digits.
a[12] does not exist because a number in base 10 divisible by 25 ends with 00,25,50 or 75, so a[12]=0.
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CROSSREFS
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A062884, A062885.
Sequence in context: A030148 A068061 A062887 this_sequence A133452 A140607 A071561
Adjacent sequences: A062883 A062884 A062885 this_sequence A062887 A062888 A062889
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KEYWORD
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nonn,base,easy
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jun 28 2001
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 23 2002
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