118893domain: NAppears in sequencesSolution of the complementary equation a(n) = 2*a(n-1) + b(n-2), where a(0) = 1, a(1) = 4, b(0) = 2, b(1) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=15A295059Indices of A224078(n) in A025487.at n=18A332241Indices of terms in A352808 that are powers of 2.at n=18A354141