38843domain: NAppears in sequencesNumbers k = p*q*r (p, q, r prime) congruent to 0 mod p+q+r.at n=35A160394Expansion of Product_{k>=1} 1/(1 - k*x^(k^2))^k.at n=36A285243Odd squarefree composite numbers k, divisible by the sum of their prime factors, sopfr (A001414).at n=26A308643