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Search: id:A163664
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| 110, 10100, 1001000, 100010000, 10000100000, 1000001000000, 100000010000000, 10000000100000000, 1000000001000000000, 100000000010000000000, 10000000000100000000000, 1000000000001000000000000, 100000000000010000000000000, 10000000000000100000000000000
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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A161168(n) or A063376(n) for n >= 1 written in base 2.
The digits from the left to the right: a 1, (n-1) times 0, a 1, and n times 0.
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FORMULA
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a(n)=110*a(n-1)-1000*a(n-2) = 10*A163449(n). G.f.: -10*x*(-11+200*x)/((100*x-1)*(10*x-1)).
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CROSSREFS
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Sequence in context: A111784 A146495 A063751 this_sequence A135645 A058935 A109241
Adjacent sequences: A163661 A163662 A163663 this_sequence A163665 A163666 A163667
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KEYWORD
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nonn,base,easy
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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 06 2009
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