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A182054
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Number of independent sets of nodes in the generalized Petersen graph G(2n,2) (n>=0).
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1
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8, 3, 39, 171, 1055, 5828, 33327, 188499, 1069855, 6065487, 34399844, 195074223, 1106262671, 6273528979, 35576813647, 201753798116, 1144133068159, 6488305791115, 36794770328583, 208660804936031, 1183302172416580, 6710431459264095, 38054430587741959
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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*a(n-1)+15*a(n-2)+3*a(n-3)-13*a(n-4)+4*a(n-5) with a(0)=8, a(1)=3, a(2)=39, a(3)=171, a(4)=1055, a(5)=5828.
G.f.: ((6*x^2-11*x-8)*(2*x^3-5*x^2-4*x+1)) / (4*x^5-13*x^4+3*x^3+15*x^2+3*x-1).
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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