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A315522
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Coordination sequence Gal.6.621.4 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, 6, 11, 17, 22, 28, 33, 38, 44, 49, 55, 60, 66, 72, 77, 83, 88, 94, 99, 104, 110, 115, 121, 126, 132, 138, 143, 149, 154, 160, 165, 170, 176, 181, 187, 192, 198, 204, 209, 215, 220, 226, 231, 236, 242, 247, 253, 258, 264, 270
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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) - a(n-2) - a(n-6) + 2*a(n-7) - a(n-8) for n > 8.
G.f.: (x^8 + 4*x^7 + x^5 - x^4 + x^3 + 4*x + 1)/(x^6*(x - 1)^2 + (x - 1)^2). (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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