198694domain: NAppears in sequencesNumber of ways to partition n labeled elements into pie slices of different sizes.at n=11A032144Number of 2's in row n of A143589 (a Kolakoski fan).at n=33A143592Semiprimes A001358(k) = p*q such that p*q+p+q and r*s+r+s are consecutive primes, where A001358(k+1)=r*s.at n=27A330478