Heptapole

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Heptapole
8b2o$7bobo2$5bobo2$3bobo2$bobo$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 2 GPS 2 THUMBSIZE 2 ]]
Pattern type Oscillator
Family Barberpole
Number of cells 13
Bounding box 10 × 10
Period 2 (mod: 1)
Heat 14
Volatility 0.70 | 0.70
Kinetic symmetry /xk
Discovered by MIT group
Year of discovery 1970

The heptapole is the barberpole of length 7.

Commonness

Due to its size, it is nowhere near as common as the bipole, tripole or quadpole. The first known appearance of the heptapole in a symmetric soup was on January 26, 2015, in a soup found by gameoflifeboy using apgsearch.[1]

It first appeared naturally on December 11, 2018, in a haul submitted to Catagolue, making it the longest barberpole and the last 13-bit periodic object to have emerged naturally.[2]

Much like with the tripole, pentapole and other barberpoles with diagonal line symmetry, it is much more common in censuses with said symmetries.

Glider synthesis

All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.

See also

References

  1. gameoflifeboy (January 26, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  2. Billabob (December 11, 2018). Re: Soup search results (discussion thread) at the ConwayLife.com forums

External links