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A099166
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G.f.: (1+x^2)/((1-2x)(1-x-x^2)); a(n)=3a(n-1)-a(n-2)-2a(n-3); a(n)=5*2^n-L(n+3); a(n)=sum{k=0..n, (L(k)-0^k)2^(n-k)}.
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0
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1, 3, 9, 22, 51, 113, 244, 517, 1081, 2238, 4599, 9397, 19116, 38753, 78349, 158062, 318331, 640233, 1286244, 2581837, 5178801, 10382078, 20803759, 41671597, 83446876, 167061513, 334394469, 669228142, 1339166931, 2679483713
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OFFSET
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0,2
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COMMENTS
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A Lucas convolution.
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LINKS
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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