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Trying to ignore them, mostly.

I am not sure if this is desirable.

(1) When we search for oeis items for a given sequence, then dead items should be ignored, of course.

(2) But when we request data about a dead item, then it is right to warn the user.

To implement (1), is_dead() method should be an exception to (2) -- is_dead() should never raise a warning. But I think all other methods should behave according to (2).

Isn't this enough to solve #38044?

I would prefer strongly to do exactly what I did. If somebody asks for data using the A-number of a dead sequence, it is his own responsability. No need for a warning.

All right. I will leave the design to you and @PeterLuschny, as I have had no occasion to use OEIS.

I looked through the code, and have no other comments.

Looks fine to me!
Thanks!

so may I set to positive review in your name, if you cannot do it yourself ?

@fchapoton

so may I set to positive review in your name, if you cannot do it yourself ?
Yes please!
Sorry that I'm very clumsy in dealing with the request/issue/review things.

ok, done.