65586domain: NAppears in sequencesNumber of nonempty subsets of {1, 2, ..., n} with <=7 pairwise coprime elements.at n=34A187268Even numbers such that the sum of the odd divisors is a Fibonacci number F and the sum of the even divisors is 2F.at n=9A274062Number of indecomposable permutations avoiding the pattern 2143.at n=8A284716