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A242893 Beginning with a centrally symmetric 'Sun' configuration of 9 rhombi with rotational symmetry, number of tiles that can be added to the free edges of the tiling. 8
9, 9, 9, 9, 18, 27, 27, 36 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..8.

S. Weber, Fourier transform on quasiperiodic point sets (select '9-fold' with 'shift 1/n')

CROSSREFS

Cf. A242128, A242129, A242888, A242889, A242890, A242891, A242892, A242894, A242895.

Sequence in context: A251559 A068395 A245429 * A275485 A293832 A277223

Adjacent sequences:  A242890 A242891 A242892 * A242894 A242895 A242896

KEYWORD

nonn,more

AUTHOR

Felix Fröhlich, May 25 2014

STATUS

approved

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Last modified January 17 15:12 EST 2020. Contains 330958 sequences. (Running on oeis4.)