36849domain: NAppears in sequencesNumbers such that all subsets of {prime(a(1)), ..., prime(a(n))} have a different sum.at n=18A138856Numbers n for which A222085(n)=A222085(n+1).at n=29A222088a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 1, a(1) = 3, a(2) = 4, a(3) = 5.at n=25A295718