sequence and combine seem to be two different implementations of the same function

[rlefevre]

{-| Turn a list of generators into a generator of lists.
-}
combine : List (Generator a) -> Generator (List a)
combine generators =
    case generators of
        [] ->
            constant []

        g :: gs ->
            Random.map2 (::) g (combine gs)

{-| Start with a list of generators, and turn them into a generator that returns a list.
-}
sequence : List (Generator a) -> Generator (List a)
sequence =
    List.foldr (Random.map2 (::)) (Random.constant [])

The slightly different documentation can also be confusing.

[jaminthorns]

Just happened upon this as well. For some extra context:

• combine was introduced in this commit under the name together and later renamed in this commit.
• sequence was added more than 2 years later in this commit.

I personally prefer the name combine because the elm/random docs repeatedly use the word "combine" when describing the mapN functions, so that's what a user would be most likely to search on the elm-community/random-extra docs.