448036604040domain: NAppears in sequencesDenominators of continued fraction convergents to sqrt(193).at n=25A041359Let p = n-th prime of the form 4k+1, take the integer solution (x,y) to the Pellian equation x^2 - p*y^2 = 1 with the smallest y >= 1; sequence gives value of y.at n=19A082393