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A311343
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Coordination sequence Gal.4.60.1 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, 4, 8, 12, 16, 22, 26, 30, 34, 36, 40, 46, 52, 56, 60, 62, 64, 70, 76, 82, 86, 88, 90, 94, 100, 106, 112, 114, 116, 120, 124, 130, 136, 140, 142, 146, 150, 154, 160, 164, 168, 172, 176, 180, 184, 188, 192, 198, 202, 206
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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-1) - a(n-2) + a(n-3) - a(n-4) + a(n-5) + a(n-7) - a(n-8) + a(n-9) - a(n-10) + a(n-11) - a(n-12) for n > 12.
G.f.: (x^12 + 3*x^11 + 5*x^10 + 7*x^9 + 9*x^8 + 13*x^7 + 12*x^6 + 13*x^5 + 9*x^4 + 7*x^3 + 5*x^2 + 3*x + 1)/(x^12 - x^11 + x^10 - x^9 + x^8 - x^7 - x^5 + x^4 - x^3 + x^2 - x + 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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