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x = 7, y = 3, rule = B3/S23 bo$3bo$2o2b3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Methuselah
Number of cells 7
Bounding box 7×3
Lifespan 5206 generations
Final population 633
L/I 743.7
F/I 90.4
F/L 0.122
L/MCPS 650.8
Discovered by Charles Corderman
Year of discovery Unknown

Acorn is a methuselah found by Charles Corderman. It was discovered no later than 1971[1], though its exact year of discovery is unknown. Its maximum population, 1057, occurs in generation 4408.[2] Also, it is composed of 2 or 3 sparks, depending on how the left side is looked at. Despite this, 4 gliders are required for synthesis. The left spark can be flipped to create another isomer that evolves the same way, and the left spark can also be changed into a V spark.

Stable pattern

The stable pattern that results from the acorn has 633 cells and covers an area of 215 by 168 cells; it consists of 41 blinkers (including four traffic lights), 34 blocks, 30 beehives (including one honey farm), 13 gliders, eight boats, five loaves, three ships, two barges, two ponds and a mango.[3] An eater 1 is temporarily formed at the north side in generation 2661, but does not survive after generation 3925.


The name was coined by Robert Wainwright "after seeing its final census",[1] which he called "oak tree",[2] apparently alluding to the proverb "From little acorns mighty oaks do grow".


  1. 1.0 1.1 Lifeline Volume 2, p. 6
  2. 2.0 2.1 Lifeline Volume 3, p. 12
  3. Koenig, H. (February 21, 2005). "New Methuselah Records". Retrieved on January 24, 2009.

External links