362418domain: NAppears in sequencesNumbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 86.at n=13A031764Values of m such that N = (m+1)(2m+1)(71m+1) is a 3-Carmichael number (A087788).at n=19A065703L.g.f. A(x) satisfies: [x^(n-1)] exp( n^2*x - n*A(x) ) = 0 for n>1.at n=5A319146