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
FORMULA
Conjectures from Chai Wah Wu, Dec 24 2019: (Start)
a(n) = - a(n-2) + a(n-5) + 2*a(n-7) + a(n-9) - a(n-12) - a(n-14) for n > 16.
G.f.: (-2*x^16 + x^14 + 3*x^13 + 7*x^12 + 15*x^11 + 21*x^10 + 29*x^9 + 29*x^8 + 28*x^7 + 29*x^6 + 25*x^5 + 19*x^4 + 13*x^3 + 7*x^2 + 3*x + 1)/(x^14 + x^12 - x^9 - 2*x^7 - x^5 + x^2 + 1). (End)
CROSSREFS
KEYWORD
nonn
AUTHOR
Brian Galebach and N. J. A. Sloane, Jun 18 2018
STATUS
approved