p49 pi-heptomino hassler

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p49 pi-heptomino hassler
x = 52, y = 24, rule = B3/S23 33b2o$34bo$6bo27bob2ob2obo$4b3o21bo6bobobob2o$3bo23bobo6bo$3b2o18b2o2b o2bo$14b2o7b2o3b2o$2o12b2o$obo$b2o32bobo$35b3o$36bo$15bo$14b3o$14bobo 32b2o$49bobo$36b2o12b2o$22b2o3b2o7b2o$21bo2bo2b2o18b2o$15bo6bobo23bo$ 9b2obobobo6bo21b3o$9bob2ob2obo27bo$17bo$17b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ ZOOM 10 GPS 10 ]]
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Pattern type Oscillator
Number of cells 98
Bounding box 52 × 24
Period 49 (mod: 49)
Heat 45.1
Volatility 0.87 | 0.87
Kinetic symmetry Unspecified
Discovered by Nico Brown
Year of discovery 2023

p49 pi-heptomino hassler is a period-49 oscillator found by Nico Brown on April 18, 2023.[1] With a minimum population of 98 cells, it was the smallest known period-49 oscillator until the discovery of 44P49.

Two copies minus the ship+fishhook catalyst at one end (for each one) can create a p49 glider gun.

There are 3 different forms of the oscillator because the block catalysts that the pi-heptominoes hit to split in two symmetrically can be moved by one cell.

A 52-glider synthesis for a variant with fishhooks instead of snakes (Catagolue: here) was found in May 2023.[2] Chris857 lowered the cost to 50 gliders on December 24, 2023,[3][4] and then to 48 gliders the next day.[5][6] On April 10, 2024, KtT found a 41-glider synthesis of the cheaper variant and a 42-glider synthesis of the canonical form.[7][8]

See also

References

  1. ↑ turingcomplete30 (April 18, 2023). Message in #cgol on the Conwaylife Lounge Discord server
  2. ↑ Chris857 (May 14, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. ↑ Chris857 (December 24, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. ↑ shinjuku (#5818150924) (December 25, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  5. ↑ Chris857 (December 25, 2023). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. ↑ shinjuku (#5819840720) (December 25, 2023). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  7. ↑ KtT (April 10, 2024). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. ↑ shinjuku (#6595330920) (April 10, 2024). Job triggered by Adam P. Goucher at GitLab Catagolue project.

External links

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