User:Kevin Ryde

Various bits of network dodginess from time to time.

My various free software and mathematical write-ups at http://user42.tuxfamily.org/index.html though as of Jan 2026 there's some problems on the download side there.

Email address there is lightly obscured against spam, or unobscured on the seqfan list, and wiki email-this-user is enabled here.

My bits of code most related to the OEIS include Perl grep for numbers in the stripped file (cf Hugo's FORTRAN), some Emacs bits, and Pari/GP recurrence guesser includes OEIS style "signature" and formula output.

The recurrence guesser includes an example program using Pari polmods for calculating terms in a recurrence. Polmod is a touch obscure, but is compact and efficient (faster and less memory than the more obvious matrix powering).