octave-sundials for ubuntu 16.04

[Tatsuro MATSUOKA]

I tried to install octave-sundials on 16.04


LC_ALL=C sudo apt install octave-sundials
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 octave-sundials : Depends: octave but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Perhaps my setting was wrong.

Please give me a clue to kick out the error.

Tatsuro