527593

Appears in sequences

• Numerators of continued fraction convergents to sqrt(211).at n=12A041392
• x-value of the smallest solution to x^2 - p*y^2 = 2*(-1)^((p+1)/4), p = A002145(n).at n=24A306529
• Number of perfect matchings on a triangular lattice of width 4 and length n.at n=11A309117
• Incrementally largest values of minimal x satisfying the equation x^2 - D*y^2 = -2, where D is an odd prime number.at n=6A336791
• Fundamental nonnegative solution x(n) of the Diophantine equation x^2 - A045339(n)*y^2 = -2, for n >= 1.at n=13A339881