up to Hofstadter Q Theory
Hofstadter Q Theory: Software
Except as indicated otherwise, all software is copyright © 2003 John J. Chew, III.
C source for fast generation of Q(n), used to extend the disk cache
Perl script that generates Q(n) vs. n scatter plots.
Perl script for listing ranges of values of Q(n), using the cache where possible.
Perl module for manipulating long integer sequences using disk caches.