I-heptomino
| I-heptomino | |||||||||
| View static image | |||||||||
| Pattern type | Methuselah | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Number of cells | 7 | ||||||||
| Bounding box | 4 × 4 | ||||||||
| MCPS | 7 | ||||||||
| Lifespan | 247 generations | ||||||||
| Final population | 39 | ||||||||
| L/I | 35.3 | ||||||||
| F/I | 5.6 | ||||||||
| F/L | 0.158 | ||||||||
| L/MCPS | 35.3 | ||||||||
| Static symmetry | C1 | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | 1971 | ||||||||
| |||||||||
| |||||||||
| |||||||||
I-heptomino is the name given by Conway to the heptomino shown in the infobox. After one generation, this converges to the same evolutionary sequence as the H-heptomino. The name I rather than H was chosen as standard for this sequence because conduits use one-letter names and H is the Herschel.
The I-heptomino stabilises after 247 generations as three blocks, two gliders, a beehive, a boat, and a ship.
The longest-lasting active reaction is the standard evolutionary sequence of a Herschel, at the bottom of the pattern below:
| (click above to open LifeViewer) RLE: here Plaintext: here |
In the following examples, on the top, there are two six-cell polyplets that follow the I-heptomino sequence. The one on the left becomes the I-heptomino itself, while the one on the right follows a slightly different sequence. On the bottom, there are two houses with one cell removed each; both follow the I-heptomino sequence.
| (click above to open LifeViewer) RLE: here Plaintext: here |
The century sequence has a phase around generation 53 that is an I-heptomino sequence plus five stable objects (three blocks, a beehive, and a toad). The I sequence then hits the beehive, destroying the beehive and toad and leaving behind a blinker.
Uses
In hasslers
The I-heptomino sequence can be hassled in oscillators. A complete list of hasslers can be found at I-heptomino hasslers.
In conduits
The I-heptomino is a recognized conduit object, represented by the letter I.
| an example of the I-heptomino in a conduit, here with a B to I (click above to open LifeViewer) |
See also
References
External links
- I-heptomino at the Life Lexicon