6890111163

Appears in sequences

• Smallest leg in right triangle with relatively prime sides and hypotenuse 5^n.at n=14A036842
• a(n) = 5^n*cos(2*n*arctan(1/2)) or denominator of tan(2*n*arctan(1/2)).at n=15A066771
• Values of x such that x^2 + y^2 = 5^n with x and y coprime and 0 < x < y.at n=29A230710