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Search: id:A026933
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| 1, 2, 11, 52, 269, 1414, 7575, 41064, 224665, 1237898, 6859555, 38187164, 213408805, 1196524814, 6727323439, 37915058384, 214140178225, 1211694546194, 6867622511675, 38981807403268, 221562006394173, 1260814207833750
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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G.f.: 1/(1+x)/sqrt(1-6*x+x^2). - Vladeta Jovovic (vladeta(AT)eunet.rs), May 13 2003
a(n)=(-1)^n*sum_{k=0...n}(-1)^k*A001850(k) - Benoit Cloitre (benoit7848c(AT)orange.fr), Sep 28 2005
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CROSSREFS
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Adjacent sequences: A026930 A026931 A026932 this_sequence A026934 A026935 A026936
Sequence in context: A026996 A110308 A027201 this_sequence A052171 A030281 A063767
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KEYWORD
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nonn
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AUTHOR
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Clark Kimberling (ck6(AT)evansville.edu)
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EXTENSIONS
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More terms from Vladeta Jovovic (vladeta(AT)eunet.rs), May 13 2003
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