419775

Appears in sequences

• Denominators of continued fraction convergents to sqrt(127).at n=11A041231
• Denominators of continued fraction convergents to sqrt(508).at n=15A041971
• 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=27A053375
• 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=30A081234
• 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=15A082394
• 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=37A262026