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A290337
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Number of minimal dominating sets in the n-Moebius ladder.
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7
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2, 4, 11, 28, 37, 67, 149, 284, 596, 1179, 2444, 5023, 10103, 20577, 41746, 84860, 172501, 350392, 712597, 1448463, 2943959, 5983960, 12162310, 24721031, 50246512, 102128407, 207584129, 421927877, 857596064, 1743119352, 3543000201, 7201377180, 14637255611
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OFFSET
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1,1
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LINKS
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FORMULA
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Empirical: a(n) = a(n-1)+a(n-2)+2*a(n-3) -a(n-4)+2*a(n-5)-2*a(n-6) +6*a(n-7)+4*a(n-8)+4*a(n-9) -6*a(n-10)-3*a(n-12) +5*a(n-13)-a(n-14)-2*a(n-15) -5*a(n-16)-2*a(n-17)-2*a(n-18) for n > 18. - Andrew Howroyd, Aug 01 2017
Empirical g.f.: x*(2 + 2*x + 5*x^2 + 9*x^3 - 8*x^4 - 20*x^5 - 4*x^6 - 4*x^7 - 40*x^9 - 26*x^10 - 26*x^11 + 14*x^12 - 22*x^13 - 33*x^14 - 45*x^15 - 14*x^16 - 14*x^17) / ((1 - x)*(1 + 2*x^4 + x^6)*(1 - x^2 - 3*x^3 - 4*x^4 - 4*x^5 - x^6 - 2*x^7 - 3*x^8 - 5*x^9 - 4*x^10 - 2*x^11)). - Colin Barker, Aug 02 2017
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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