A simple non-periodic substitution tiling with just one decorated prototile mentioned in the extended version of [Goo98] .
download vectorformat Chaim's Square Tiling
[Goo98]
Goodman-Strauss, Chaim
Matching rules and substitution tilings
Ann. of Math. (2)
1998,
147, 1,
pp. 181--223,
MR1609510