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A310458
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Coordination sequence Gal.4.78.1 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, 10, 15, 20, 25, 30, 36, 40, 44, 50, 55, 60, 65, 70, 76, 80, 84, 90, 95, 100, 105, 110, 116, 120, 124, 130, 135, 140, 145, 150, 156, 160, 164, 170, 175, 180, 185, 190, 196, 200, 204, 210, 215, 220, 225, 230, 236, 240, 244
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internal format)
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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) = 2*a(n-1) - 2*a(n-2) + 2*a(n-3) - 2*a(n-4) + 2*a(n-5) - 2*a(n-6) + 2*a(n-7) - a(n-8) for n > 8.
G.f.: (x^8 + 2*x^7 + 4*x^6 + x^5 + 4*x^4 + x^3 + 4*x^2 + 2*x + 1)/((x - 1)^2*(x^2 + 1)*(x^4 + 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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