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A312980
Coordination sequence Gal.6.248.2 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, 9, 13, 19, 24, 30, 35, 41, 45, 50, 54, 58, 63, 67, 73, 78, 84, 89, 95, 99, 104, 108, 112, 117, 121, 127, 132, 138, 143, 149, 153, 158, 162, 166, 171, 175, 181, 186, 192, 197, 203, 207, 212, 216, 220, 225, 229, 235, 240
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, May 01 2024: (Start)
a(n) = a(n-1) + a(n-11) - a(n-12) for n > 12.
G.f.: (x^12 + 3*x^11 + 5*x^10 + 4*x^9 + 6*x^8 + 5*x^7 + 6*x^6 + 5*x^5 + 6*x^4 + 4*x^3 + 5*x^2 + 3*x + 1)/(x^12 - x^11 - x + 1). (End)
CROSSREFS
Sequence in context: A312977 A312978 A312979 * A035104 A141224 A064423
KEYWORD
nonn
AUTHOR
STATUS
approved