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A310650 Coordination sequence Gal.6.547.2 where G.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. 0
1, 4, 6, 14, 20, 26, 26, 34, 34, 42, 48, 54, 54, 62, 62, 70, 76, 82, 82, 90, 90, 98, 104, 110, 110, 118, 118, 126, 132, 138, 138, 146, 146, 154, 160, 166, 166, 174, 174, 182, 188, 194, 194, 202, 202, 210, 216, 222, 222, 230 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

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.

LINKS

Table of n, a(n) for n=0..49.

Brian Galebach, k-uniform tilings (k <= 6) and their A-numbers

FORMULA

Conjectures from Chai Wah Wu, Dec 24 2019: (Start)

a(n) = a(n-1) + a(n-6) - a(n-7) for n > 8.

G.f.: (-2*x^8 + 5*x^7 - x^6 + 6*x^5 + 6*x^4 + 8*x^3 + 2*x^2 + 3*x + 1)/(x^7 - x^6 - x + 1). (End)

CROSSREFS

Sequence in context: A029647 A310648 A310649 * A310651 A122555 A210632

Adjacent sequences:  A310647 A310648 A310649 * A310651 A310652 A310653

KEYWORD

nonn

AUTHOR

Brian Galebach and N. J. A. Sloane, Jun 18 2018

STATUS

approved

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Last modified April 16 18:53 EDT 2021. Contains 343050 sequences. (Running on oeis4.)