355325domain: NAppears in sequencesCompound filter (summands of A004001 & summands of A005185): a(n) = P(A286541(n), A286559(n)), where P(n,k) is sequence A000027 used as a pairing function, with a(1) = a(2) = 0.at n=53A286560Smallest nonnegative integer that is not the sum of fewer than n signed Lucas numbers.at n=10A365907