1355310domain: NAppears in sequencesNumbers k such that core(k) = b(k,1)*b(k,0) where b(k,1) is the number of 1's in binary representation of k, b(k,0) the number of 0's and core(k) the squarefree part of k.at n=30A071639Integers of the form k = m^3-m^2 such that k-+1 are primes.at n=12A154731