21390802domain: NAppears in sequencesNumbers k where the fractional part of tan(k) decreases monotonically to 0.at n=11A016274Least positive integer multiples of angle x such that their direction cosines form a unit vector: Sum_{k>0} cos(a(k)*x)^2 = 1, where a(1)=1 and x=2.at n=29A080137