4574225

Appears in sequences

• Denominators of continued fraction convergents to sqrt(241).at n=16A041451
• Denominators of continued fraction convergents to sqrt(964).at n=16A042865
• Let p(n) be the n-th prime congruent to 1 mod 4. Then a(n) = the least k for which m^2+1=p(n)*k^2 has a solution.at n=23A094049
• Smallest integer y satisfying the Pell equation x^2 - n*y^2 = -1 for the values of n given in A031396.at n=43A130227
• Determinant of the (p_n-1)/2 X (p_n-1)/2 matrix with (i,j)-entry being the Legendre symbol ((j-i)/p_n), where p_n is the n-th prime.at n=51A228077