

A193175


Numbers n such that there exists a twodimensional generalized Bravais lattice with nfold symmetry.


2



4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 48, 50, 54, 60, 66, 70, 84, 90
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

The complete list of 29 terms is shown. These are the values of 2n such that A193179(n)=1.


REFERENCES

Mermin, N. David; Rokhsar, Daniel S.; and Wright, David C.; Beware of 46fold symmetry: the classification of twodimensional quasicrystallographic lattices. Phys. Rev. Lett. 58 (1987), 20992101.


LINKS



CROSSREFS



KEYWORD

nonn,fini,full


AUTHOR



STATUS

approved



