# Dean Hickerson

Dean Hickerson | |

Born | Unknown |
---|---|

Residence | United States |

Nationality | Unknown |

Institutions | Unknown |

Alma mater | University of California, Berkeley |

**Dean Robert Hickerson** is a mathematician and Life enthusiast who has made many major contributions to the Game of Life.

In 1989 Hickerson created the first oscillator search program with which he found many small, low-period oscillators, such as caterer, Monogram, and fumarole. He has since found many sparkers as well as billiard tables, including the only known period 17 oscillators.

Hickerson also used automated searches to discover the first spaceships other than the glider and the various speed c/2 orthogonal spaceships; these new spaceships traveled at speeds c/3, c/4, and 2c/5. In addition to these, he discovered the first diagonal c/4 spaceship other than the glider, as well as the first period 2 spaceships. He again advanced spaceship technology when, in 1991, he successfully combined thirteen switch engines to create the first c/12 diagonal spaceship, the 13-engine Cordership.

In 1991 Hickerson created the first sawtooth, sawtooth 1212, using one of his c/3 spaceships, the turtle.

## Patterns found by Dean Hickerson

## 1## 2## 3## 4## 5## 6## 7## 8## A## B## C |
## C cont.## D## E## F## H## J## L## M## N## O## P |
## P cont.## R## S## T- Thumb 1
- Tlog(t) growth
- Toaster
- Triple caterer
- Trivial P6 Oscillator No. 1
- Turning toads
- Turtle
- Twin prime calculator
## W |

## References

- "Life Credits". Mark D. Niemiec. Retrieved on June 10, 2009.
- Dean Hickerson at the Mathematics Genealogy Project

## External links

- Dean Hickerson's Game of Life Page (hosted by Tomas Rokicki)