|View static image|
|Pattern type||Strict still life|
|Number of cells||9|
|Year of discovery||1971|
The loop and eleven loop can be seen as the long and long long versions of the hat. Orthogonally lengthened versions of the hat are also possible still life components (a long³ version appears in Cthulhu), though they are not still lifes of their own.
Hat is the twenty-fifth most common still life in Achim Flammenkamp's census, being less common than trans-boat with tail but more common than boat-ship-tie. It is also the thirty-third most common object on Adam P. Goucher's Catagolue.
- Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
- Robert Wainwright (June 1971). "Lifeline Volume 2". Lifeline.
- Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.