OFFSET
0,2
LINKS
Rémy Sigrist, Table of n, a(n) for n = 0..1000
Reticular Chemistry Structure Resource (RCSR), The bey tiling (or net)
Rémy Sigrist, Illustration of the first terms
Rémy Sigrist, PARI program for A298788
FORMULA
Conjectures from Colin Barker, Jan 29 2018: (Start)
G.f.: (1 + x)^2*(1 + x + 4*x^2 + x^3 + x^4) / ((1 - x)^2*(1 + x + x^2)^2).
a(n) = 2*a(n-3) - a(n-6) for n>6.
(End)
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 27 2018
EXTENSIONS
More terms from Rémy Sigrist, Jan 28 2018
STATUS
approved