Ulam Spiral

uspiral is command line utility that outputs a visualization of the Ulam spiral in the form of a grayscale image. uspiral can generate spiral images with dimensions in the range [128, 4096]. Many image formats are supported including PNG, JPEG, and Webp. See below for the program usage.

Visualize the Ulam spiral.

Usage: uspiral [OPTIONS] <OUTPUT_FILE>

Arguments:
  <OUTPUT_FILE>  output image path (e.g., /foo/bar/ulam.png)

Options:
  -d, --dimension <DIMENSION>  image dimension [default: 256]
  -h, --help                   Print help
  -V, --version                Print version