45780

Appears in sequences

• Numbers n such that 299*2^n-1 is prime.at n=16A050908
• a(n) = (2*n^3 + 5*n^2 - 9*n)/2.at n=34A162258
• Place two n-gons with radii 1 and 2 concentrically, forming an annular area between them. Connect all the vertices with line segments that lie entirely within that area. Then a(n) is the number of vertices in that figure.at n=32A337701
• a(n) = A144066(n+3,3).at n=6A341597