132510domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 52.at n=13A031730a(n) = 196*n^2 + 14.at n=26A158555Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y>=2z.at n=29A212505Antidiagonal sums of the convolution array A213822.at n=19A213824