208887domain: NAppears in sequencesNumbers k such that phi(k)/k = 16/29.at n=16A172344Partial sums of A122836 (number of topologies on n labeled elements in which at least one element belongs to some pair of noncomparable members of the topology).at n=6A178689Sum of n-th powers of the roots of x^3 - 7*x^2 - 49*x - 49.at n=5A275195