Numbers k = p*q*r (p, q, r prime) congruent to 0 mod p+q+r.

Terms

a(0) =27a(1) =30a(2) =70a(3) =105a(4) =231a(5) =286a(6) =627a(7) =646a(8) =805a(9) =897a(10) =1581a(11) =1798a(12) =2967a(13) =3055a(14) =3526a(15) =4543a(16) =5487a(17) =6461a(18) =6745a(19) =7198a(20) =7881a(21) =9717a(22) =10366a(23) =10707a(24) =14231a(25) =16377a(26) =20806a(27) =21091a(28) =23326a(29) =26331