6578829

Appears in sequences

• Denominators of continued fraction convergents to sqrt(139).at n=17A041255
• Denominators of continued fraction convergents to sqrt(556).at n=17A042065
• Write fundamental unit for real quadratic field of discriminant n as x + y*omega; sequence gives values of y for n == 3 mod 4.at n=29A053375
• Let p = n-th prime, take smallest solution (x,y) to the Pellian equation x^2 - p*y^2 = 1 with x and y >= 1; sequence gives value of y.at n=33A081234
• Let p = n-th prime of the form 4k+3, take the solution (x,y) to the Pellian equation x^2 - p*y^2 = 1 with x and smallest y >= 1; sequence gives value of y.at n=17A082394
• The positive odd fundamental solutions y = y0(n) for the Pell equation x^2 - d*y^2 = +1. It turns out that d = d(n) coincides with A007970(n).at n=42A262026