29997829

Properties

Appears in sequences

• a(n) = (2*cos(Pi/15))^(-n) + (2*cos(7*Pi/15))^(-n) + (2*cos(11*Pi/15))^(-n) + (2*cos(13*Pi/15))^(-n), for n >= 1.at n=10A306610
• Prime numbersat n=1857735