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A193176 A193175(n)/2. 1
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 27, 30, 33, 35, 42, 45 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

Mermin, N. David; Rokhsar, Daniel S.; and Wright, David C.; Beware of 46-fold symmetry: the classification of two-dimensional quasicrystallographic lattices.  Phys. Rev. Lett. 58 (1987), 2099-2101.

LINKS

Table of n, a(n) for n=1..29.

CROSSREFS

Cf. A193175.

Sequence in context: A080682 A182049 A038770 * A032517 A246087 A246094

Adjacent sequences:  A193173 A193174 A193175 * A193177 A193178 A193179

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane, Jul 17 2011

STATUS

approved

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Last modified September 2 03:11 EDT 2014. Contains 246321 sequences.