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User:Kevin Ryde

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(Activity down either a little or a lot, for an unkown time, presently.)

My various free software and mathematical write-ups at http://user42.tuxfamily.org/index.html

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