Function for finding addition decompositions of an integer

New to Julia
3

Using Combinatorics.jl (and collect-free after @DNF’s advice):

using Combinatorics

function sum_combinations(N)
    list = Vector{Int64}[]
    for i in 2:N
        for x in combinations(1:N,i)
            if sum(x) == N
                push!(list, x)
            end
        end
    end
    return list
end

julia> sum_combinations(7)
4-element Vector{Vector{Int64}}:
 [1, 6]
 [2, 5]
 [3, 4]
 [1, 2, 4]
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