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A137445
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a(n) = 2a(n-1)-2a(n-2), with a(0)=3 and a(1)=2.
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0
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3, 2, -2, -8, -12, -8, 8, 32, 48, 32, -32, -128, -192, -128, 128, 512, 768, 512, -512, -2048, -3072, -2048, 2048, 8192, 12288, 8192, -8192, -32768, -49152, -32768, 32768, 131072, 196608, 131072, -131072, -524288, -786432, -524288, 524288
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = (3/2 - I/2)*(1 - I)^n + (3/2 + I/2)*(1 + I)^n, n>=0. - Taras Goy, Apr 20 2019
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MATHEMATICA
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LinearRecurrence[{2, -2}, {3, 2}, 40] (* Harvey P. Dale, May 03 2018 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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