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A311993
Coordination sequence Gal.5.98.2 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, 8, 13, 17, 23, 27, 32, 36, 40, 44, 48, 53, 57, 63, 67, 72, 76, 80, 84, 88, 93, 97, 103, 107, 112, 116, 120, 124, 128, 133, 137, 143, 147, 152, 156, 160, 164, 168, 173, 177, 183, 187, 192, 196, 200, 204, 208, 213, 217
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 14 2021: (Start)
a(n) = a(n-1) + a(n-9) - a(n-10) for n > 10.
G.f.: (x^10 + 3*x^9 + 4*x^8 + 5*x^7 + 4*x^6 + 6*x^5 + 4*x^4 + 5*x^3 + 4*x^2 + 3*x + 1)/(x^10 - x^9 - x + 1). (End)
CROSSREFS
Sequence in context: A311991 A189370 A311992 * A379420 A311994 A311995
KEYWORD
nonn
AUTHOR
STATUS
approved