86759domain: NAppears in sequencesNumbers k such that the period of the continued fraction for sqrt(k) contains exactly 77 ones.at n=2A031845Let r, s, t be three permutations of the set { 1, 2, 3, ..., n }; a(n) = minimal value of Sum_{i=1..n} r(i)*s(i)*t(i).at n=33A070735