Wikipedia Talk:Penrose tiling

Multiple tilings and rotational symmetry

Indeed, there are 54 ways: My list omitted 1111222, 111232, 112132,
12232, and 1243.  Of course, to write "54" would be OR.  Perhaps the
OEIS has a sequence for "necklaces from {1,2,3,4} summing to n".  Or I
could send them that sequence, if find the time to compute it (and its
relatives) properly.  Or is there a combinatorial objects server that
would cough up the answer in a citable way?  -Dan Hoey 15:38, 12 June
2007 (UTC)