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Search: id:A163663
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| 0, 100, 11000, 1110000, 111100000, 11111000000, 1111110000000, 111111100000000, 11111111000000000, 1111111110000000000, 111111111100000000000, 11111111111000000000000, 1111111111110000000000000, 111111111111100000000000000, 11111111111111000000000000000
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OFFSET
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0,2
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COMMENT
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The digit pattern of a(n) is: n times 1 and (n+1) times 0.
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FORMULA
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a(n)= 110*a(n-1)-1000*a(n-2) = 100*A109241(n-1). G.f.: 100*x/((100*x-1)*(10*x-1)). - R. J. Mathar, Aug 12 2009
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CROSSREFS
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Sequence in context: A096885 A027576 A099374 this_sequence A151648 A013747 A065447
Adjacent sequences: A163660 A163661 A163662 this_sequence A163664 A163665 A163666
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KEYWORD
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nonn,base
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AUTHOR
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Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Aug 02 2009
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EXTENSIONS
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Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 12 2009
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