156522

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=23A080136
• Numbers k such that (13*10^k + 89) / 3 is prime.at n=23A280558