284714domain: NAppears in sequencesNumbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 42.at n=20A031630G.f. satisfies: A(x) = A(x/A(x))^2 - x.at n=8A241000Nearest integer to Integral_{x=0..n} x^x dx.at n=7A331122