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A281586
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E.g.f.: z*(((exp(z)+1)/((exp(z)+2*exp(-z/2)*cos(z*sqrt(3)/2))/3))-1).
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0
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0, 1, 2, 3, -4, -15, -54, 133, 792, 4293, -15130, -123849, -895212, 4101799, 42732522, 386103915, -2177360656, -27544520691, -298649804706, 1999963458217, 29765143177020, 376514568163377, -2919514870785766, -49968285360277437, -722370834074695896, 6365117686550339275
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internal format)
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OFFSET
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0,3
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LINKS
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MAPLE
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A281586_list := proc(len) z*(((exp(z)+1)/((exp(z)+2*exp(-z/2)* cos(z*sqrt(3)/2))/3))-1); series(%, z, len+1); seq(k!*coeff(%, z, k), k=0..len) end: A281586_list(20);
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PROG
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A281586_list = lambda len: SIB(len, 3)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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