72918domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 30.at n=17A031708a(n) = 225*n^2 + n.at n=17A156814a(n) = 900*n^2 + 2*n.at n=8A158406a(n) = 324*n^2 + 18.at n=15A158590Total number of parts of multiplicity 5 in all partitions of n.at n=49A222705