Very long ship
| Very long ship | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 10 | ||||||||
| Bounding box | 5 × 5 | ||||||||
| Frequency class | 15.6 | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | Unknown | ||||||||
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Very long ship (or long long ship) is the long long extension of ship.
Commonness
It is the twenty-ninth most common still life in Achim Flammenkamp's census, being less common than tub with tail but more common than mirrored table.[1]
It is the 27th most common still life on Adam P. Goucher's Catagolue, being less common than hat but more common than very long boat. It is the 2nd most common still life with 10 cells, being 4 times less common than boat-tie but 3.5 times more common than block on table.[2]
Compared to Catagolue's typical 16×16 soups, the very long ship is 16% more common in 8×8 soups and 6% more common in 10×10 soups. This is probably because the predecessor shown below takes room to grow and is less likely to be hit by something else if it's the only object.
It is about one-fifth as common as the long ship but almost 2,000 times as common as the long^3 ship.
A decent number of very long ships, although not enough to be almost all, form from the right half of generation 7 of the following pattern, where generation 0 is a bakery predecessor with one cell moved to an adjacent location. The very long ship forms in generation 17. Some of them go through the sequence shown here, while others reach generation 7 in a different way. Because this is a common predecessor, the very long ship is often accompanied by two nearby boats.
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Glider synthesis
On March 28, 2007, Dean Hickerson found a 4-glider synthesis of this still life.[3]
A 3-glider collision exists that produces a very long ship along with a lot of junk, formed via a glider hitting a bullet heptomino. [4]
References
- ↑ 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 May 5, 2023.
- ↑ Dean Hickerson's 2, 3, and 4-glider syntheses pattern collection
- ↑ MathAndCode (October 16, 2021). Re: Small Spaceship Syntheses (discussion thread) at the ConwayLife.com forums, second code block, top row, second from left, unintentional
External links
- Long long ship at the Life Lexicon
- The 25 ten-bit still-lifes at Mark D. Niemiec's Life Page