84155

Appears in sequences

• Numbers m such that 2^m reversed is prime.at n=32A057708
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0100-0100 pattern in any orientation.at n=12A146826
• G.f.: Sum_{n>=0} (n+1) * x^n * (1 + x^n)^n.at n=84A326002
• Number of edges formed inside a right triangle by the straight line segments mutually connecting all vertices and points on the two shorter edges whose positions on one edge equal the Farey series of order n while on the other they divide its length into n equal segments.at n=10A359976