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A310018
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Coordination sequence Gal.4.34.1 where Gal.u.t.v denotes the coordination sequence for a vertex of type v in tiling number t in the Galebach list of u-uniform tilings.
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0
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1, 3, 5, 10, 14, 17, 17, 20, 27, 33, 36, 40, 39, 39, 44, 55, 65, 64, 60, 61, 65, 72, 83, 91, 84, 82, 87, 93, 100, 109, 111, 106, 108, 115, 121, 126, 129, 133, 132, 136, 143, 147, 146, 151, 159, 160, 164, 169, 167, 168
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OFFSET
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0,2
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COMMENTS
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Note that there may be other vertices in the Galebach list of u-uniform tilings with u <= 6 that have this same coordination sequence. See the Galebach link for the complete list of A-numbers for all these tilings.
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LINKS
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FORMULA
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a(n) = a(n-6) + a(n-7) - a(n-13) for n > 23.
G.f.: (-2*x^23 - 4*x^22 + 2*x^20 - 2*x^18 + 2*x^17 + 6*x^16 + 3*x^13 + 5*x^12 + 9*x^11 + 12*x^10 + 18*x^9 + 19*x^8 + 16*x^7 + 16*x^6 + 17*x^5 + 14*x^4 + 10*x^3 + 5*x^2 + 3*x + 1)/(x^13 - x^7 - x^6 + 1). (End)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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