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A310102
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Coordination sequence Gal.4.16.1 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, 6, 11, 16, 18, 21, 24, 27, 30, 38, 43, 42, 45, 48, 51, 54, 65, 70, 66, 69, 72, 75, 78, 92, 97, 90, 93, 96, 99, 102, 119, 124, 114, 117, 120, 123, 126, 146, 151, 138, 141, 144, 147, 150, 173, 178, 162, 165, 168
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listen;
history;
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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-7) - a(n-14) for n > 14.
G.f.: (x^14 + 3*x^13 + 6*x^12 + 11*x^11 + 16*x^10 + 18*x^9 + 21*x^8 + 22*x^7 + 21*x^6 + 18*x^5 + 16*x^4 + 11*x^3 + 6*x^2 + 3*x + 1)/(x^14 - 2*x^7 + 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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