327635domain: NAppears in sequencesa(n) = floor(phi*a(n-1)) + a(n-2) where phi is the golden ratio.at n=17A005830a(1) = 1; a(n+1) = sum of terms in continued fraction for the sum of the continued fractions, [a(1); a(2), a(3),...,a(n-1),a(n)] and [a(n); a(n-1), a(n-2),...,a(2), a(1)].at n=25A058081