Smallest number m such that sigma(m) is an n-almost prime.

Terms

a(0) =2a(1) =3a(2) =6a(3) =14a(4) =21a(5) =42a(6) =93a(7) =186a(8) =381a(9) =651a(10) =1302a(11) =2667a(12) =5334a(13) =11811a(14) =23622a(15) =49146a(16) =82677a(17) =165354a(18) =344022a(19) =761763a(20) =1523526a(21) =2752491a(22) =5332341a(23) =10664682a(24) =21845397a(25) =43690794a(26) =85327221a(27) =170654442a(28) =341310837a(29) =677207307