a(n) = denominator of r(n): r(n) is such that the continued fraction (of rational terms) [r(1);r(2),...,r(n)] = n^2, for every positive integer n.

A128561

a(n) = denominator of r(n): r(n) is such that the continued fraction (of rational terms) [r(1);r(2),...,r(n)] = n^2, for every positive integer n.

Terms

    a(0) =1a(1) =3a(2) =5a(3) =21a(4) =25a(5) =539a(6) =975a(7) =847a(8) =43095a(9) =112651a(10) =146523a(11) =639331a(12) =3663075a(13) =69321747a(14) =885243125a(15) =19340767413a(16) =25672050625a(17) =381540593511a(18) =189973174625a(19) =12778871553a(20) =886736325865

External references