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Search: id:A087342
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| A087342 |
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Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists. |
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+0
2
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| 1, 32, 321, 5432, 98765, 765432, 22212019181716, 98765432, 987654321, 19181716151413121110, 2019181716151413121110, 1312111098765432, 19181716151413121110987, 2928272625242322212019181716
(list; graph; listen)
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OFFSET
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1,2
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EXAMPLE
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a(7) = 22212019181716 is the concatenation of 22,21,20,19,18,17 and 16 and is divisible by 7.
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CROSSREFS
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Cf. A087343.
Adjacent sequences: A087339 A087340 A087341 this_sequence A087343 A087344 A087345
Sequence in context: A050279 A096764 A095152 this_sequence A083468 A125395 A126553
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Sep 06 2003
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EXTENSIONS
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More terms from David Wasserman (wasserma(AT)spawar.navy.mil), May 10 2005
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