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A310503
Coordination sequence Gal.4.73.1 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.
0
1, 4, 10, 16, 20, 26, 32, 36, 40, 46, 52, 56, 62, 68, 72, 76, 82, 88, 92, 98, 104, 108, 112, 118, 124, 128, 134, 140, 144, 148, 154, 160, 164, 170, 176, 180, 184, 190, 196, 200, 206, 212, 216, 220, 226, 232, 236, 242, 248, 252
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.
FORMULA
Conjectures from Chai Wah Wu, Jan 24 2020: (Start)
a(n) = a(n-1) + a(n-7) - a(n-8) for n > 8.
G.f.: (x^8 + 3*x^7 + 6*x^6 + 6*x^5 + 4*x^4 + 6*x^3 + 6*x^2 + 3*x + 1)/(x^8 - x^7 - x + 1). (End)
CROSSREFS
Sequence in context: A310500 A310501 A310502 * A310504 A310505 A215248
KEYWORD
nonn
AUTHOR
STATUS
approved