Smallest number whose largest odd noncomposite divisor is its n-th divisor.

Terms

a(0) =1a(1) =3a(2) =6a(3) =20a(4) =42a(5) =84a(6) =156a(7) =312a(8) =684a(9) =1020a(10) =1380a(11) =1860a(12) =3480a(13) =3720a(14) =4920a(15) =7320a(16) =10980a(17) =14640a(18) =16920a(19) =21960a(20) =26280a(21) =34920a(22) =45720a(23) =59640a(24) =69840a(25) =89880a(26) =106680a(27) =125160a(28) =145320a(29) =177240