247301domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that there are exactly five biquadratefree powerful numbers (A338325) between k^2 and (k+1)^2.at n=15A338392Compositions (ordered partitions) of n into odd parts where the first part must be a maximal part.at n=32A368746Prime numbersat n=21816