1116637

Properties

Appears in sequences

• a(n) and a(n)+4^k are primes at least for k=1,2,3,4,5.at n=26A049495
• Triangle read by rows: row n gives y transposed, where y is the solution to the matrix equation M*y=b, where the matrix M and vector b are defined by M(i,j) = ((2^(i+1) + 1)^(j-1) + 1)/2 and b(i) = ((2^(i+1)+1)^n + 1)/2 for 1 <= i,j <= n.at n=10A292625
• Prime numbersat n=86936