Code for constructing the linear representation of k-regular sequences given by certain recurrence relations.
See also Meta ticket #21202.
Depends on #21295
Depends on #21203
CC: @dkrenn
Component: combinatorics
Author: Gabriel F. Lipnik, Daniel Krenn
Branch/Commit: 488123c
Reviewer: Clemens Heuberger, Daniel Krenn
Issue created by migration from https://trac.sagemath.org/ticket/27940