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A133666
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a(n) = a(n-1) - 16*a(n-2), a(0)=1, a(1)=4.
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1
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1, 4, -12, -76, 116, 1332, -524, -21836, -13452, 335924, 551156, -4823628, -13642124, 63535924, 281809908, -734764876, -5243723404, 6512514612, 90412089076, -13788144716, -1460381569932, -1239771254476, 22126333864436, 41962673936052
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OFFSET
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0,2
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LINKS
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FORMULA
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G.f.: (1+3*x) / (1-x+16*x^2).
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CROSSREFS
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KEYWORD
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easy,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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