4846147

Properties

Appears in sequences

• Least 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=1.at n=31A080136
• Least 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=3.at n=29A080138
• Numerators of convergents to Pi/2.at n=10A096456
• a(n) is the n-digit integer m that maximizes sin(m).at n=6A308879
• Numbers k such that sin(k) > 1 - 1/k^2.at n=7A389816
• Prime numbersat n=338443