Index k of the least colossally abundant number c=A004490(k) with sigma(c)/c >= n.

Terms

a(0) =2a(1) =5a(2) =9a(3) =14a(4) =19a(5) =27a(6) =40a(7) =56a(8) =82a(9) =119a(10) =180a(11) =275a(12) =426a(13) =673a(14) =1072a(15) =1728a(16) =2807a(17) =4596a(18) =7558a(19) =12497a(20) =20741a(21) =34544a(22) =57704a(23) =96638a(24) =162204a(25) =272802a(26) =459637a(27) =775678a(28) =1310959a(29) =2218651