417818

Appears in sequences

• Numbers n such that 207*2^n-1 is prime.at n=31A050855
• Number of (n+1) X (6+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.at n=11A250609