374898domain: NAppears in sequencesBi-unitary barely abundant numbers: bi-unitary abundant numbers k such that bsigma(k)/k < bsigma(m)/m for all bi-unitary abundant numbers m < k, where bsigma(k) is the sum of the bi-unitary divisors of k (A188999).at n=26A302571Number of mutual-visibility sets in the n X 3 grid graph.at n=12A392419